inflict more fall damage on the player / boff's when jumping off 20 storey cliffs etc.. it's already silly how you can run up almost vertical cliffs and "dive" up them, at least fix this so it's less immersion breaking.
that is all.
edit: oh and while you're at it add some music to the exploration maps.. in the arcanis arm one now and there is none whatsoever, so add something cool and exploration-soundy