It's reasonable to have "keep staff intact" as your starting point, because like you said, if you're buying their past successes, try to get what earned said successes.
But this can only ever be a starting point.
And that plan got blown to smithereens due to factors totally beyond Underwood or Whitman's control. I'm bummed about that, but it isn't Chin Coleman's fault that OSU hired Mike Boynton.
I don't know if anyone here watched the KU-OSU game in Stillwater in early March, but that was just from a pure entertainment perspective the best game I watched all year. OSU lost 90-85, and allowed 55% shooting to KU (Frank Mason was incandescent), but offensively they were just a symphony of aggressive but precisely executed and fearless basketball. Plus the crowd were up for it and OSU has a great venue, it was just everything college basketball can and should be.
I didn't think we had a chance at Underwood, I wasn't watching this in coaching search mode, I was just enjoying (IIRC) the Saturday afternoon game on ESPN. I also watched his upset of West Virginia at SFA in the tournament and while it wasn't the same run and gun shootout, it was similarly just an awesome spectacle to watch that offense at work against such a big challenge.
When we hired him out of the blue I was over the freaking moon, and the chance to really implement an identity like that was the reason why. That's everything I think Illinois basketball should be, and THAT'S the path that will attract players to come here.
He did it in one offseason at SFA (I've gone back and watched some clips, it's true), he did it in one offseason at OSU. Will we have the same level of wins and losses success as those teams next year? Perhaps not (though I don't buy this idea that we should expect to be garbage).
But what I expect to see is for us to stand toe to toe with terrific teams and play the sort of thrilling, intricate, intelligent offensive basketball that I saw OSU play last year. Win or lose. And if we don't, if we're playing basketball that looks more influenced by John Groce and Nick Irvin than Brad Underwood, the place to point the finger will be obvious.