I would LOVE to see a chests in the game that were brand specific.
Not replacing current chests, but maybe as a nice reward found in game. Maybe something like an “outside dungeon” (outside of the Trials / slaughter events. )
There are some fantastic Epic Quality guns in the game, and they feel more rare than Legendaries. Giving players at least a place to farm for a chest that would drop specific brands of guns would make it easier than playing the travel to the vending machines game.