From the UVa perspective, next year will be interesting. Hard to project, because we're losing so much experience, and integrating quite a few new pieces. Talented pieces, but new.
IMO Gill & Tobey are good, but replaceable. Austin Nichols is as talented as Gill offensively (or at least very close), and better defensively. Tobey has shown flashes of greatness, but is one of the most frustrating players not just of the Bennett era, but I can ever remember at UVa. He can look like an All-American one night, and completely disappear after 2-3 quick boneheaded fouls the next night. Diakite is nowhere near as polished as Tobey, but has upside off-the-charts. We also have a freshman (Jarred Reuter) who isn't getting much PT right now because there's just not much available...very skilled though, and extremely high hoops IQ.
Brogdon is who we'll struggle to replace. He's been the constant over the run of the last 3 years, and there's no one on our current roster who projects anywhere near as good. We've got 2 very good inbound G's (one a McD's AA), but they're freshmen. I love Devon Hall's potential, but Brogdon is an all-time great at UVa. Darrius Thompson started off well in the OOC, but hasn't performed as well with the ACC sched. Replacing Brogdon will be a "by committee" approach, but it won't be easy.
Perrantes returns, which will make the transition less painful. I'd expect him and Nichols to lead the scoring most nights, and be as good an inside/outside duo as there is in the league. The question is how will guys like Hall, Thompson, Isaiah Wilkins, Marial Shayok and a couple of others who have played strictly complimentary roles to this point, perform as bigger focal points?
When Mike Scott left, Joe Harris & Akil Mitchell stepped up. When Joe & Akil left, Justin Anderson & Darion Atkins stepped up. There is a history of "next man up" since Bennett has been coach...he and the staff do a great job of player development. There will be alot to replace in 2016-17...I think TB is up to the challenge, and will keep the program among the top 4-5 in the ACC. There could be some growing pains next year though.