There would be an influx of pilots... because its either crew or pilot. Something tells me people will split 50:50.
I like the idea, but no thanks for pvp. I like a little bit of rigidity and expectation with my crew. I don't want to be surprised because everyone dropped chemspray for an additional ammo.
But on PvE... that's going to be interesting.
I doubt more people will want to pilot because the only other option is "crew" (which is how it currently is anyway)...
I also doubt people will drop chem spray for second ammo - The person in a gunner spot sure but not your main engineers...
The only "rigidity" change is the 2 of each thing, if you were to remove this and just not have class distinction (just loadout distinction) it would lead to less people thinking they have to be the gunner to shoot..
The addition of 2 of each lets captains properly fill the third crew slot for many light guns and some heavy.. If 2 ammo is good enough then you also get the buff.. They could add this function to the gunner now ad make it a more flexible class.. but they don't want that. instead we get stamina and ammo changes to try to do it ..