SM ZU's balance has been often put in question for years. The community has long been divided around some of the biggest threats in the tier. Even with Shiftry and Exeggutor getting suspect tested and then banned (the former a couple weeks before Sword and Shield's release and the latter some months ago), some complains about the state of the metagame remain. In order to put its finger on which tiering action to take, the SM ZU council has hosted a tiering survey some weeks ago. The results are detailed at the bottom of this post.

Swanna stand out in the survey as a concerning element in the metagame. It is only the Pokemon that received a majority of support for a suspect test (both from the overall playerbase and the qualified playerbase) in the tiering survey. This is nothing new as it has been brought up for a suspect test since the end of ZUPL I, three years ago, and considered for a suspect test alongside Shiftry. Swanna is mainly used as a breaker or cleaner with its Z-move sets. On the one hand, Z-Rain Dance boosts its STAB moves (Surf's power and Hurricane's Accuracy), allows it to outspeed the most common Choice Scarf users like Electivire and Rotom-Fan, and counter status thanks to Hydration. On the other hand, Z-Mirror Move basically gives Swanna a Sword Dance boost on top of using a Z-move attack, letting Swanna break through teams with its unresisted STAB combination and STAB priority Aqua Jet. Scouting Swanna's set without using very passive and fat Pokemon, usually exclusive to stall teams, like Dusclops, Lickilicky, and Pyukumuku can be really rough as Swanna can use special sets just like physical ones, and checks to them are different. However, without Exeggutor and Shiftry in the metagame anymore, there has been more room to build around Swanna. Checks like Rotom-Fan, Silvally formes, and Mareanie are still common, and while no perfect answers can often keep Swanna in check until the endgame. For instance, specially defensive Wishiwashi has emerged as a great stop to special sets of Swanna, that fits well in most bulky offensive teams and can generally reliably scout Swanna's set. Furfrou also rose as a staple in these teams that can easily revenge kill a Z-Mirror Move boosted Swanna. For these reasons, the playerbase has been pretty split on Swanna.
This thread will close in two weeks, on Sunday 23rd October, and will be followed by a suspect vote on Swanna. The requirements to vote are based on post-Exeggutor's ban tournaments performance and include users who made semi-finals of the latest SM ZU Cup and ZUPL IV players who played at least 3 games of SM ZU and won at least one of them.

Swanna stand out in the survey as a concerning element in the metagame. It is only the Pokemon that received a majority of support for a suspect test (both from the overall playerbase and the qualified playerbase) in the tiering survey. This is nothing new as it has been brought up for a suspect test since the end of ZUPL I, three years ago, and considered for a suspect test alongside Shiftry. Swanna is mainly used as a breaker or cleaner with its Z-move sets. On the one hand, Z-Rain Dance boosts its STAB moves (Surf's power and Hurricane's Accuracy), allows it to outspeed the most common Choice Scarf users like Electivire and Rotom-Fan, and counter status thanks to Hydration. On the other hand, Z-Mirror Move basically gives Swanna a Sword Dance boost on top of using a Z-move attack, letting Swanna break through teams with its unresisted STAB combination and STAB priority Aqua Jet. Scouting Swanna's set without using very passive and fat Pokemon, usually exclusive to stall teams, like Dusclops, Lickilicky, and Pyukumuku can be really rough as Swanna can use special sets just like physical ones, and checks to them are different. However, without Exeggutor and Shiftry in the metagame anymore, there has been more room to build around Swanna. Checks like Rotom-Fan, Silvally formes, and Mareanie are still common, and while no perfect answers can often keep Swanna in check until the endgame. For instance, specially defensive Wishiwashi has emerged as a great stop to special sets of Swanna, that fits well in most bulky offensive teams and can generally reliably scout Swanna's set. Furfrou also rose as a staple in these teams that can easily revenge kill a Z-Mirror Move boosted Swanna. For these reasons, the playerbase has been pretty split on Swanna.
This thread will close in two weeks, on Sunday 23rd October, and will be followed by a suspect vote on Swanna. The requirements to vote are based on post-Exeggutor's ban tournaments performance and include users who made semi-finals of the latest SM ZU Cup and ZUPL IV players who played at least 3 games of SM ZU and won at least one of them.
btboy (SM Cup)
czim (SM Cup)
Danny (SM Cup)
Elfuseon (SM Cup)
Huargensy (SM Cup)
TheFranklin (SM Cup)
MZ (ZUPL)
pokemonisfun (ZUPL)
Greybaum (ZUPL)
Finchinator (ZUPL)
EviGaro (ZUPL)
gum (ZUPL)
Quagg (ZUPL)
Xayah (ZUPL)
ayevon (ZUPL)
Plas (ZUPL)
Chokepic (ZUPL)
Dj Breloominati♬ (ZUPL)
Medeia (ZUPL)
LPY (ZUPL)
tlenit (ZUPL)
Clementine (ZUPL)
RawMelon (ZUPL)
sasha (ZUPL)
wooper (ZUPL)
czim (SM Cup)
Danny (SM Cup)
Elfuseon (SM Cup)
Huargensy (SM Cup)
TheFranklin (SM Cup)
MZ (ZUPL)
pokemonisfun (ZUPL)
Greybaum (ZUPL)
Finchinator (ZUPL)
EviGaro (ZUPL)
gum (ZUPL)
Quagg (ZUPL)
Xayah (ZUPL)
ayevon (ZUPL)
Plas (ZUPL)
Chokepic (ZUPL)
Dj Breloominati♬ (ZUPL)
Medeia (ZUPL)
LPY (ZUPL)
tlenit (ZUPL)
Clementine (ZUPL)
RawMelon (ZUPL)
sasha (ZUPL)
wooper (ZUPL)
Here you can find the results of the first and lattest SM ZU survey. The voting pool was separated into players who played SM in ZUPL IV or reached semi-finals of the lattest SM ZU Cup, and the other ones.
The average grade is 7.35, and 7.00 for the qualified playerbase. This means that players overall enjoy playing SM ZU, even if there is room to improve.
The average grade is 6.61, and 6.13 for the qualified playerbase. This means that a significant part of the playerbase doesn't find the tier competitive, even if a majority of the voters don't have a problem with the competivity of the tier.
Stats for the qualified playerbase are 7.14%, 35.17%, 28.57%, and 28.57% ranging from entirely balanced to broken, excluding the Abstain vote. This means that a majority of voters take issue with Swanna in SM ZU and would support a suspect test.
Stats for the qualified playerbase are 26.67%, 46.67%, 26.67%, and 0% ranging from entirely balanced to broken, with no abstention. Some discussions about suspect testing Electivire had taken place in the ZU server during ZUPL, however only a small portion of the voters actually support it being suspect tested.
Stats for the qualified playerbase are 7.14%, 64.29%, 21.42%, and 7.14% ranging from entirely balanced to broken, excluding the Abstain vote. Simisage has rose as one of the best wallbreaker in the tier in the post-Exeggutor metagame, leading to some users questioning its balance. While, it is generally seen as more problematic than Electivire, the majority of the voters doesn't support a suspect test for Simisage.
Stats for the qualified playerbase are 28.57%, 50.00%, 21.42%, and 0% ranging from entirely balanced to broken, excluding the Abstain vote. Just like Simisage and Electivire, the majority of the voters, qualified or not, is opposed to a Combusken suspect test.
The average grade is 7.35, and 7.00 for the qualified playerbase. This means that players overall enjoy playing SM ZU, even if there is room to improve.
The average grade is 6.61, and 6.13 for the qualified playerbase. This means that a significant part of the playerbase doesn't find the tier competitive, even if a majority of the voters don't have a problem with the competivity of the tier.
Stats for the qualified playerbase are 7.14%, 35.17%, 28.57%, and 28.57% ranging from entirely balanced to broken, excluding the Abstain vote. This means that a majority of voters take issue with Swanna in SM ZU and would support a suspect test.
Stats for the qualified playerbase are 26.67%, 46.67%, 26.67%, and 0% ranging from entirely balanced to broken, with no abstention. Some discussions about suspect testing Electivire had taken place in the ZU server during ZUPL, however only a small portion of the voters actually support it being suspect tested.
Stats for the qualified playerbase are 7.14%, 64.29%, 21.42%, and 7.14% ranging from entirely balanced to broken, excluding the Abstain vote. Simisage has rose as one of the best wallbreaker in the tier in the post-Exeggutor metagame, leading to some users questioning its balance. While, it is generally seen as more problematic than Electivire, the majority of the voters doesn't support a suspect test for Simisage.
Stats for the qualified playerbase are 28.57%, 50.00%, 21.42%, and 0% ranging from entirely balanced to broken, excluding the Abstain vote. Just like Simisage and Electivire, the majority of the voters, qualified or not, is opposed to a Combusken suspect test.