I've reached a conundrum on how wide and upgraded to make training rooms.
Endurance training is a no brainer. 3 wide and fully upgraded since every dweller wants a high endurance to maximize health upgrades on level up.
Luck as I hear is another big one for caps out in the waste and somewhat partially to room rushes, taking a big backseat to the room's stat. So that might get a 3 wide full upgrade since everyone will want to train it.
But then the other rooms don't ever have quite as many trainees that need to go through them at once... Or it feels that way to me.
How do you guys handle these rooms? It feels dangerous to go three wide and stick 1 or 2 dwellers in to train, the incidents might kill them. But I suppose I have the cash to revive them at this point too.