Good point regarding #5.
And yes, rebounding is definitely a whole team effort. However, given his size advantage, I think it is not unreasonable to hope for him pulling down a greater share of the team's rebounds.
There are a couple of advanced metrics on rebounding, that are much better, in my opinion, than rebounds per game (which is highly dependent on the number of opportunities, which in turn is dependent on the FG% for both teams). The first is
rebounding rate or rebounding percentage: the percentage of missed shots a player rebounds during his time in the game. This is still a little flawed, because it doesn't account for times when allows a teammate to grab a board. This stat essentially penalizes players who are on a team with other good rebounders.
Having said that, Matt's overall rebounding rate was 15.3%, which would rank him 9th in the Big Ten, behind: Edey (21.1%!), TJD, Omoyuri, Reed, Reese, Sissoko, Njie, and Dickinson. I don't think it's unreasonable for Big Matt to climb that list next year.
I would love to know how Matt did on
adjusted rebounding percentage. I can't find any other reference for this stat, but it sounds like it accounts for opportunities where the ball bounces far away from where the player could reasonably grab it, or where no effort to rebound is made by the player (because he allows a teammate to get it).