1) Will bone behaviour be fixed? There's a prob with a multiplying bone animated objects but I heard one guy posted the bug on tracker already. This prob needs a fix anyway, it's a highest priority question for those who wants to make games with bone animated enemies.
2) Another question: why don't you create redo function aside of undo?
3) And the third question: will you make platform behaviour compatible with the physics behaviour? I mean make a "platform behaviour" object(like a character) collide with "physics behaviour" object(like a box).