i've seen TF before Transformation
didn't know what you meant by TG ... XD
discovered what you meant while playing, the acronym is backwards and it's missing a letter, GTF gender transformation.
i love the game and concept,
it would be nice to see this but TF into different pokemon as well and maybe some basic character art so we can visually see what the player character would look like, could put it where the head is currently.
and if you do implement more pokemon perhaps the selection could be made when the player first eats the pokemon food. they could have a "dream" about the pokemon or something like that.
just some ideas i had while playing :)