For one I really would like another Cyclops helm variation or such, like:
http://img43.imageshack.us/img43/4839/skarmoidea.png
As well, two handed weapons, they have somewhat increased power, longer charge times (however much more stronger than their 1-handed counterparts), and forgo the protection of shields.
Rifle Type:
http://img15.imageshack.us/img15/8854/skrifleidea.png
Functions the same as handguns, they feature more slightly more damage, but has a slower fire-rate. Has a strong charged shot.
Cannon Type:
A charge only weapon, quite powerful if it hits. Slows players to a crawl if it's the current active weapon. Generally should fall as a major support weapon.
The issue I would have with ranged two handed weapons is that there's no drawback to not having a shield for all that extra firepower and range.
Guns are already way too OP.