How good is this prospect pool

At least top 32 IMO

Bold take

It would finish in the top-4 for college teams in the state of MN.

I'd say middle of the pack for the NHL. It's not barren, but doesn't have the top end other team can claim,

Well it depends how people classify prospects. For instance, Laf, Kakko, Kravs, Chytil, fox, Miller, Shesty, Lundkvist are all roster players now but I think most people still call them prospects. Meanwhile many teams haven’t brought their youth up so I’d say your “prospects” look solid but if Rossi and Boldy are playing well and stay in the NHL then they lose the “prospect” tag in my eyes. Of course everyone feels different and we all value our own “never going to make it” prospects more than others do.

I basically go with the eligible for the Calder as a prospect. To me guys that have been playing more than a cup of coffee in the NHL have "graduated" out of prospect ranks.