It's hard to say in advance, because I want to be fair.
If our front court looks competent at all, that would be a success. I don't think I'm exaggerating when I say that the big rotation is one of the worst in team history. M.L. Carr didn't have to coach with bigs this bad. And worse, it's the first time Joe will be coaching without a stretch-5; often he's had two.
If Simons plays defense, that's a success.
If Scheierman looks like a rotation player, that's a success.
If he keeps the chemistry together all season long and the team plays hard, that's a success.
I'd love to see growth in some of his coaching weaknesses, such as being better at making in-game adjustments and stopping long runs from the other team. But, if the bigs are as bad as I'm worried about, I don't think there's going to be a lot that Joe can do.
Oh... and if we're below .500 in February, it would be a success to cut the minutes of our best players in order to develop some of the fringe rotation players. Don't stubbornly win games; get the draft pick.