I believe Hollins helped us tremendously in key areas, but no, I don't yet see a reason to start him over Bass. However, if Bass isn't getting the job done for whatever, or if we just need what Hollins brings to the team when he's on the floor, then, yes, I could see putting him out there.
He really bothers players with his size and length, and his aggressiveness on the defensive end. He makes it tough for them to see things clearly on the court, and that helped us tremendously in the series against the Hawks. However, I say keep starting Bass. There is no reason not to start him, unless he makes mistakes.