The pokedex currently allows you to switch to special forms when viewing a pokemon, right? I think it could be cool if there were entries that could be viewed when selecting these special forms. Maybe the people who submit the textures for these forms could write them, if they wish.
It could also be done in a similar style to Insurgence, with each entry starting with "A special form discovered by <texturer>."
As a bonus, it could be neat if this was added to serverside texturers (Though I'm not sure how possible/difficult that is).