I think you should have the option to sell turrets, hulls or consumables (Double power, Speed Boost ect.). Because I have all turrets and hulls, but some i dont use, because they're not good in my opinion. I really want M1 Shaft, because its my fav turret. But i dont have money to throw at TO, so grinding it just doesnt work. I think selling would be great because guns like twins, and hulls like titan i could sell (Not that they would contribute much :D), which would make it easier.