You are entitled to your opinion on fit. My take is that if the staff sees a fit here (and Blackwell does as well), then there is a fit here. You are making a bunch of assumptions about what Blackwell needs for playing. At Wisconsin, he was needed to take a whole bunch of shots (and the ball in his hands) because they lacked the talent that we possess.
Considering virtually all of our Insiders are indicating we are in contention for picking him up, that would indicate that there is heavy interest on the part of the staff. I can't imagine the staff simply getting involved to drive up his costs to a competitor (though that would be a fine alternative too).
I simply find it weird questioning why we should be interested in signing a player who averaged nearly 20 points and 5 rebounds per game last season while playing in the B1G.
Even if we happen to maintain all of our talent, we are still probably one or two key signings from the portal from being where we want to be.