In all seriousness, shame they didn’t/couldn’t implement dual wielding. I would’ve made it unlockable through a single-level perk. Or, heck, even a two-level perk: level one for small guns and level two for larger ones, Blazkowicz style, baby! ...but with a big accuracy penalty, of course. Can’t have it all in life, kid!
However, I can’t say it’s a dealbreaker for me either.