As a UC fan who is fairly familiar with Crean from his days in Marquette, I have to believe that he'll do a very nice job and most Indiana fans should be happy with him.
The key right now will simply be patience; I see Indiana this year being in a similar spot as UC was two years ago. This year will be very rough, next year likely rough too, but by 2010 you should start seeing some exciting development unfolding on a nightly basis (if not earlier than that).