custom guns

I think in BL2, there should be weapon customization, kind of like army of 2. You start out with a generic gun of any type (you can get more off enemies, and chests) and instead of having weapon drops, all the drops are weapon upgrades, like DIFFERENT SIGHTS (i hate when you get an awesome gun that has terrible sights), barrels that increase accuracy, extended mags, different elemental effects, and maybe attachments like silencers. Also you should be able to make your own weapon decals, like flames, or a skull and two M16s, but not generic decals, you make your own, so no two guns are exactly alike. also i'd like to see more realistic guns. they dont need to make them REAL, just realistic, like halo guns. I'm not sure if this is possible, but it would be cool.