This may be a homer take, but I don't see us falling off much at all. Obviously losing 2 time NPOY and our best glue guy will hurt early in the season, but TKR and Heide are pretty darn solid players. We also have 4 guys behind them that all have a ton of potential to hit the ground running. Berg has looked a lot like Edey style player in the games we have seen him, though not as dominant. Furst could take a leap forward with more playing time. And the 2 freshmen could surprise us, who knows with them.
For the backcourt all we lose is Jones and Morton. Morton won't be much of a loss, and we arguably could upgrade at Jones' spot if Colvin takes the sophomore leap or Catchings hits the ground running. Our style will change because we will have an amazing backcourt that should have more of the focus. If Berg/Jacobsen can hit some open 3's like they have done on videos, I could see Heide, Catchings, and Smith feast driving the ball.
It will take some time as we will play more like we did on the Ivey/Williams team and that will take some time to adjust to. Maybe pick up a few more early losses than this year. But the B1G isn't looking super stellar (except that Rutgers class, WTF?) so I can see us fighting for a 3rd B1G championship and a top 3 seed in the tourney.