re: Redshirt Marshall?

The main difference in Marshall's decision vs. Brown's is that Marshall has a lot more pro upside than Brown, like you stated. He'll get drafted higher than Brown would have, so it makes the decision a lot different.

I think he'll come back for two reasons. He is very academically oriented, and I get the vibe that the perception of him as Robin to Gurley's Batman kind of irks him a little bit, as would be expected for someone who is extremely talented in their own right. I think he'll want a year as the bell cow, if only to prove a point and write his own legacy.