The problem with Focus Sash is not that it currently is a suspect in the metagame, but that it easily could be in a metagame with seemingly small changes. Specifically, when there are no residual damage effects in play Focus Sash completely throws balance under the train.
Focus Sash was a bit of a shock when I first started serious D/P battling (when shoddy was still pretty gimp). I started out mostly using teams that didn't include Stealth Rock, Spikes, Toxic Spikes, Sandstream, or Hail. However, I soon added SR in to every one of them that didn't have it because I was getting easily picked apart by the few people out there who ran multiple Focus Sashers. It blows to be up 6-2 and then lose because the 2 left were zam and weavile with sashes. SR is great in that regard - everything takes at least a small amount of damage from it, so you have the sash covered when you put it up. Of course, there is still use available to sashers as you have the time before SR is put up, and any time in between spins/setups to bring them out. I feel this is relatively balanced.
You can probably guess what this is leading to. I'm not the biggest fan of SR, by any means, but I feel that it is necessary in any metagame which also allows Focus Sash. The other options for countering sash use don't cut it often enough for it to remain balanced:
Spikes - Flying pokemon laugh at you, and spikers are much less common than SRers, causing centralization in that respect.
Toxic Spikes - Even less worthwhile than Spikes for this.
Sandstream - Certainly, it's likely that even more people will rely on this in a metagame which is SR free. Beside the pokemon which are immune to sandstorm damage still able to use sashes, you have increased TTar and Hippo use, and decreased use of pokemon that don't function well in sandstorm. Also of note: changing the weather.
Hail - Much as Sandstream, except while less pokemon are immune to it, it's also less realistic to use on a non-theme team due to Abomasnow.
So, it seems we either end up with a metagame in which Focus Sash is a very common occurrence and fast sweepers laugh at everyone, or one in which everyone fears Focus Sash Shedinja and uses SS/Spikes teams. This could be an exaggeration, of course, and we never know without testing. But really, common sense can hold out, and I think that it seems most reasonable that if there is ever going to be any testing on a metagame that does not include SR, Focus Sash will have to go too.
Note: This is not just another thread about testing SR. I've specifically targeted focus sash here because there seem to be quite a few people who don't think it's a valid concern. I'm also assuming that we agree on the statement: Without residual damage effects, focus sash is a serious menace to the metagame.
Focus Sash was a bit of a shock when I first started serious D/P battling (when shoddy was still pretty gimp). I started out mostly using teams that didn't include Stealth Rock, Spikes, Toxic Spikes, Sandstream, or Hail. However, I soon added SR in to every one of them that didn't have it because I was getting easily picked apart by the few people out there who ran multiple Focus Sashers. It blows to be up 6-2 and then lose because the 2 left were zam and weavile with sashes. SR is great in that regard - everything takes at least a small amount of damage from it, so you have the sash covered when you put it up. Of course, there is still use available to sashers as you have the time before SR is put up, and any time in between spins/setups to bring them out. I feel this is relatively balanced.
You can probably guess what this is leading to. I'm not the biggest fan of SR, by any means, but I feel that it is necessary in any metagame which also allows Focus Sash. The other options for countering sash use don't cut it often enough for it to remain balanced:
Spikes - Flying pokemon laugh at you, and spikers are much less common than SRers, causing centralization in that respect.
Toxic Spikes - Even less worthwhile than Spikes for this.
Sandstream - Certainly, it's likely that even more people will rely on this in a metagame which is SR free. Beside the pokemon which are immune to sandstorm damage still able to use sashes, you have increased TTar and Hippo use, and decreased use of pokemon that don't function well in sandstorm. Also of note: changing the weather.
Hail - Much as Sandstream, except while less pokemon are immune to it, it's also less realistic to use on a non-theme team due to Abomasnow.
So, it seems we either end up with a metagame in which Focus Sash is a very common occurrence and fast sweepers laugh at everyone, or one in which everyone fears Focus Sash Shedinja and uses SS/Spikes teams. This could be an exaggeration, of course, and we never know without testing. But really, common sense can hold out, and I think that it seems most reasonable that if there is ever going to be any testing on a metagame that does not include SR, Focus Sash will have to go too.
Note: This is not just another thread about testing SR. I've specifically targeted focus sash here because there seem to be quite a few people who don't think it's a valid concern. I'm also assuming that we agree on the statement: Without residual damage effects, focus sash is a serious menace to the metagame.