I'm not particularly hell-bent on bringing the SMG back, but it would feel more authentic, would it not?
There can be a working solution for this, as evidenced by a picture from
this thread:
The "Minimum players" is responsible for the locking/unlocking of a specific squad when the player numbers requirement is (not) met. All TWI (and custom mappers) would have to do is go through their maps and fine-tune this, giving us just enough open infantry/assault squad to fill them all up, plus the speciallist squads open (i.e. marksmen, at least 1 AT at a given time, etc.; depending on what squads are available on that map).
Not only would this allow for reintroducing SMGs into Classic, but it would also have the added benefit of making us play in full squads, instead of having a small number of players scattered across several squads (but some people are what they are and just don't want to play as a team in a team game and therefore they'd whine and moan about it, but we can't account for everyone's special needs now, can we?).
Ideally, the minimum players requirement would be combined with the loadout option, as per Nikita's proposal (i.e. SMG or Rifle & pistol).
's way me sees it, guv'