yes
even if it had cats

HELL YES. Little cats would be adorable, and I don't know any MMO games like TFM that are centered around cats minus Nekodancer maybe, so...

Cats, all my yes

probably, but you never know

Yea, also here is some movement difference ideas: 1. The cats move a bit faster by 2 speed, but they slide a bit if they stop while walking (similar to the ice effect)
2. they jump higher, but they can't move while holding down.
3. some things properties change, like the throwables can be thrown in the direction the player is going. and the shaman items are easier to climb but less stable. (and prolley a new set of animations :3)

Then what will "transfor" mean?

OF COURSE I WOULD

I may. I will at least try