This is for those of you who like some mechanical bite to your transformation-based roleplaying.

Currently, no mainstream tabletop RPG caters specifically to the transformation crowd, even in their supplements. You'll occasionally see rules for items that swap a character's sex, or spells that let people turn into monsters, or grow, or shrink, or just about anything else. However, these are always incidental to a bigger system; and no tabletop setting caters specifically to transformation as a major theme.

I've had some time to consider how to include transformation themes in a variety of games; or even create transformation-based sub-settings. Originally, I thought about just creating a big list of how to work transformation themes into specific games, but that would actually be terribly inefficient, and probably not as helpful as it sounds.

So, here's how we'll do this. Either...
A: Toss me a transformation concept you'd like to see work in a tabletop game; I'll tell you how you can do it, or recommend a system that does it already. If you have a specific system in mind, I'll tell you how to do it in that system, if I'm already familiar with the system; or

B: Toss a tabletop RPG at me and ask me what kinds of TFs work in that one; again, if I know it, I'll give a few ideas.

My "expertise" is with the various classic/new World of Darkness games (such as Vampire: the Masquerade/Requiem); but I'm familiar with a variety of other series.

P.S.
I'm toying with creating a full-fledged setting (and possibly game mechanics, if I don't just port something) for transformation-themed tabletop RPGs.