Honestly, I trust Castron and Fitz (given they're still here). Three picks in a draft like this will be incredibly hard to screw up.
Gun to my head I think I'd prefer forwards to defensemen in the top-20, unless they're some can't miss big balls future Norris guy. Typically D prospects take more development time and we've got some nice ones on the back burner that should be good to go within the next 0-2 years: Smith, Walsh, Bahl, Misyul, Okhotyuk. In terms of forwards we've got some excellent depth guys in the pipeline but outside of Foote and maybe Boqvist there's not a ton of star potential - just some really good middle-six/depth guys.
With Hall gone, Palms and Goose on expiring contracts, and no top young forwards outside of the #1's and Bratt, adding a few big ticket forwards would be very, very nice. We can't come close to calling ourselves even a bubble team if Wood and Zajac are getting regular shifts in the top-6.