I remember seeing this suggestion a while back.
Given the nature of toribash, how you have to designt the moves and all.
If both players are in different poses then in someway one is going to have an advantage over the other. That being said, you're also going to inevitably have a situation in which one pose is the best for a specific mod for 'x' reason ( that isn't to say that you're not going to have games in which the person with the "better" pose loses). And that leading upto a pay to win type of deal going on.
I personally don't think it's a good idea.
However.
If it is applied to the game I think it should be restricted, players should onlybe able to use poses in private servers.