At one point Kings were ranked 1, 1, and 2 overall for their prospect pool. Not all will work out, but clearly a few Blake was counting on simply didn’t. Kaliyev and Bjornfot are the big ones, and you can put Turcotte and Thomas in their own category of disappointment.
Bigger issue is he failed to trade assets. Vegas has used assets for trades that have really panned out. So has Colorado. Blake made one successful trade using a prospect chip and that was Fiala. That he could never parlay any of these pieces into more help on the left side is malpractice.