I'll think about a 3x3, entrepreneur in. It's just that when you get an elevator that small, you get camera collisions with the elevator shaft.
Btw, having multiple occupants on an elevator now works. Each elevator will have a limit based on the amount of square "footage" it has. Say a 3x3 elevator is enough for one player, thats 9 square units (bricks) per person. If you made a 9x9 elevator it'd be good for 9 players.
3 x 3 = 9
9 x 9 = 81
81 / 9 = 9
So, when you make an elevator, it will the result of that type of division (minus any remainder) and set a max persons limit.