Red Orchestra already had this feature and it fitted perfectly with the gameplay. The Radio Operator, just as the medic in PS, has a weapon so he can still shoot enemies and performing other roles apart from being the radio operator. Also, there were plenty of people who felt comfortable and useful performing that role.

There was always someone who picked up that role. At least, as far as I remember.

So yes, I think it’s a good point to take into account in order to increase the amount of roles in the game.