This is a funny time to be working out the "best 22". Ask again closer to the season, probably after the NAB cup and the practice games. Every year a new player excites and a few others improve to the point of overtaking old hands.
I think the most vulnerable in your line-up are Ward and Holland. Players like Bell, CJ, Warnock and even Frawley provide more potential than these two. And Dunn hasn't shown he is a better CHF option than Miller yet.
2007 is going to be Bate's year ... if he is only good enough for the bench I'll be very surprised.