An idea I had and always thought would be cool is the ability to activate his adaptive shields ability to get temp health (the way it works now), but then the player also has the ability to press the adaptive shield ability again to do a pulse of aoe damage around the player based on how much adaptive shield he has stored up and by doing this it removes all his remaining adaptive shield. It would give him more things to do, deal a bit more damage and allows for more risk/ reward gameplay. You can risk losing all the shield and dying to do more damage to a large area or keep the shield for more protection or use the shield for a bit to absorb damage and then use the rest to do damage.

Also I think it would be cool if he had some kind of extra ability on his slam button, but for when he is on the ground. The ability is basically taken from sonic the hedgehog. Basically when you are on the ground, you can tap the slam ability button to spin in place to build up speed boost and quickly launch forward dealing damage as if you used the grapple hook ability. However you have to time the ability correctly to build up more speed levels. Then it goes on cool down not allowing you to slam or spin.