Yes the mechanics are mostly just for combat and some other effects, mostly just to keep the game near reality. And along the storyline we will be transporting an item that will tray to change us. So a system is being used so that it is not as Fuzzy as in Free Form.
Basically Speak to SpirituallyAddicted if she is ok with your idea and concept I can either Help you make a character or make one for you [As you please] that fits with your idea and can do the things you would like, or come close to them.
Or I can at least tray, It might get harder the further you get away from normal humans bit a fair bit can be don.
I might get into trouble if you want to be a Huge Dragon with 7 heads but I can easily handle Fey, Nymphs, Humanoid Devils and Demons, Various Mythological Creatures.
If Spiritually Addicted is ok with it spring the idea on me and I will se what we can work out :)