I think Hill is the kind of guy that has made the big money (ending an $18 mil per year deal), and may stay for a more reasonable $10 mil type deal if he really did enjoy playing here. Hill has bounced around a bit the last few years being on 5 teams in 4 years.
Brogdan is restricted, but some team may make it difficult to keep him. I really like the Brogdan, Bledsoe, Hill trio and hope we can keep them all. I think Lopez is a key too.
As was stated earlier, a lot of this depends on what the Bucks owners are willing to spend.