Something I haven't seen being mentionned often (at least from memory) when talking about typings is the interaction that rock types have with sandstorm. The 1,5x spdef boost is nothing to scoff at! In some cases, it really helps with the potential for defensive play with certain typings:
Rock/Flying has been mentionned a lot as a good check to flying types (like torn) and heatran. The spdef boost helps a lot in this task. Also, something that will come back often in this post, the typing doesn't have any 4x weakness, meaning that, under sandstorm, nothing really threatens the type too much on the special side.
Rock/Normal also benefits from the sand, as it has one main goal: switch in on ghosts an force progress. The boost only helps in this task against the specially oriented ghosts . This one grew a lot on me, although it's viability will be heavily linked to the viability of ghosts themselves.
Even Rock/Bug feels better under sand, as it has the least weaknesses out of the type pairings with rock. Unfortunately, it feels like the typing is kind of out of the race, as it really doesn't have much merit outside of that, but I still wanted to point it out.
In the end, I really think working with the rock typing will be the way to go, at least for me, during the voting period. The typing really has a lot of challenges and boons that seem fun to work with, a lot of things that are lacking in the non-rock typings.
Rock/Flying has been mentionned a lot as a good check to flying types (like torn) and heatran. The spdef boost helps a lot in this task. Also, something that will come back often in this post, the typing doesn't have any 4x weakness, meaning that, under sandstorm, nothing really threatens the type too much on the special side.
Rock/Normal also benefits from the sand, as it has one main goal: switch in on ghosts an force progress. The boost only helps in this task against the specially oriented ghosts . This one grew a lot on me, although it's viability will be heavily linked to the viability of ghosts themselves.
Even Rock/Bug feels better under sand, as it has the least weaknesses out of the type pairings with rock. Unfortunately, it feels like the typing is kind of out of the race, as it really doesn't have much merit outside of that, but I still wanted to point it out.
In the end, I really think working with the rock typing will be the way to go, at least for me, during the voting period. The typing really has a lot of challenges and boons that seem fun to work with, a lot of things that are lacking in the non-rock typings.