If Nathan's power is to generate some type of repulsive force, could he not channel that force into some type of concussion blast?

I'm thinking his powers are similar to Cannonball from X-Force / X-Men, who could generate a "blast field" to fly, and later could expand his field to make a shield or a offensive blast.

I agree he is just like Cannonball from the X- Men!

Isn't being able to fly at great speed useful enough?

Man has always dreamed of being able to fly.

I think Nathan's power to fly is good enough. To be the most useful, I think, he might need like a bulletproof vest so he isn't shot from a far range, and I think he's be more useful with a sword than Hiro... I think.

The white cloud he made when flying away from Bennet suggests that he can break the sound barrier. Check the sig. If flying isn't enough for him, he might be able to embrace a sonic boom somehow... Unlikely, but you never know

If the dude gets over himself and uses his power in the superhero way, he might decide not to act alone.

Also, if you check one of the online comics, Nathan saved a girl from a burning building. Pretty good of him.

I think they should keep him just with the flight. Giving him extra powers just makes it too easy, hopefully just having flight will mean we get to see the heroes working together.