Not going to lie, one of my big reasons for not wanting to draft Cossa over Wallstedt was that the Oil Kings don't develop players very well and all of skaters that have been drafted from them, with the "exception" of Lazar, have never really become NHL regulars. Now, the goalies who were drafted (Brossoit and Jarry) have become decent NHL goalies, but not really true starters (Yes, Jarry was the starter for Pittsburgh but he didn't look that great for most of the year and they didn't make the playoffs).
My hope is that Cossa bucks this trend and I'm always willing to bank on Yzerman being able to develop players better. I'm still happy we got one of the really good goaltenders in the draft with the trade-up, though.