I think a sword and shield kind of thing would be cool kinda like they have in Warframe also a rocking two pistols at a time would be cool as long as they weren't each as powerful as hand cannons lol some kind of energy beam shooter attached to your hands would be kinda cool similar to iron man. I want to see some more futuristic/alien type stuff and more unique type of guns like the thorn or Necrochasm(minus the fact the Necrochasm is one of the worst guns in the game). If they had a scout rifle like the thorn or a gun that had bullets with a chance of setting you on fire or freezing you or maybe even do something like that one grenade a defender Titan has that like keeps you from double jumping and slightly slows you down