Table goes short, Auto-Raise ATC from the BB?

[binki]

All hands are 8/16 at The Bike last Saturday. Table composition is 4-6 ATC players at any given time, mostly passive. My play is TAG preflop and ABC postflop unless someone picks up on it and then I change it up against them. Plenty of calling down with hopeless draws.

This is the main game in a must move. We have 3 spots with no players several times. Sometimes it is because players are leaving and new ones are coming, other times is players on breaks.

With only 6 players should I auto-raise ATC from the bb if one or two players limp to me?