This has been addressed and it's no biggie to push the \ button and be rid of it. Common people deal with it, it's almost automatic for me. I know I need to toss bio and grenade launcher, automatic reflex.
i think the problem is when you are on a high level wave and you get thrown into a weapon locker and bam! you have crappy weapons everywhere and you dont even know it and when your current gun runs out of ammo it switches to one of those crappy weapons
and about mana shield, it would be nice for weapon masters to not have those
or if you have loaded weapons maxed you should have an option to opt out of getting mana shield weapons
they cause more problems than they solve and i just think they should be treated like a - stat weapon