They need to bring back the gravity bomb for starters. The return of super weapons would be nice too.

I like skill based weapons, so how about a rail gun that locks on only after you have a physical lock like the missile does but you have to maintain a lock like you do with a leech beam for 6 seconds before you fire it. On impact it does slightly more damage than a plasma bolt and recharges your own shield by 15 points. Oh and it can go through shields for half damage.

Energy generator. Ok so this would be really cool. For a brief time about as long as an autopilot, you get energy back when you barrel roll. It has a very slight turbo effect when activated to help get enough air to roll but with out having too much of an effect. As long as you are in a roll you will be unaffected by weapons.

So if you are in a spot where there are back to back combo rolls you can get back all your energy and you won't fly off the track because you get missiled in mid air. The ultimate skill based green weapon that isn't op.