It looks like Simmons and Ingram are locks to be stars - probably all-stars, maybe superstars.
I think Brown and Rabb have that kind of potential too. I like Brown a lot. I know he can't shoot yet, but I think in 5 years, people are going to wonder how he wasn't in the mix for the number 1 pick.
Dunn, Skal, Heild, and Ellenson are possible stars, but things have to break right for them. Dunn and Heild need the ball a lot to be in the flow of the game. On the wrong team they may struggle.
Skal and Ellenson both have potential in the right system to start and even star, but their development has to go well. Both need body work. Both need to toughen up and be willing to bang.
I haven't really seen much about the foreigners other than youtube clips. It's hard to say.