Wings and Armour that doesn't stop your rolling power would be nice.
Seriously, how is it impossible to roll or air recover while wearing armour when you can still run up walls and do flips?!?
Other than that, turning into a hunter would have been cool, or just turning into a dragon and destroying everything with your crazyiness, although I know he can't really make himself bigger than he is without consuming massive amounts of people... Which would mean there should be a devestator that turns you into a dragon for awhile!
The supreme hunter can screw off when you tear a tank in half with your tail! It would be like having the claw power, musclemass power, and whipfist (whiptail?) power active at the same time, with armour.
Although for a realistic addition, actual flight would have been cool. Also wouldn't Alex be able to just morph himself to dodge missiles? He could just make a hole in his chest that it would pass through... But that would make it too easy.