The slot is not pointless and it should be removed.
And there is something called consistency.
Should be removed "because I said so" and you mean consistency, like removing rec dmg from rangers, because it wasn't explained enough on how it works only to give it back next patch to grens? That is the consistency you speak of here?
Is it consistent that USF can't equip 2nd LMG despite them having 2 weapon slots and m1919 taking 1?
Is it consistent that healing between faction is all over the place in terms of costs, availability and how it actually works?
Sorry, there is no magical "consistency" in the game, only individual cases.
Try to stay on topic unless you want to give a weapon slot to mp-40 VG.
So you're saying extra nades should go from mp40 and weapon slot being given instead?