Just your friendly reminder that goaltending is hard to evaluate because IT'S ALMOST COMPLETELY MENTAL.
Imagine if every time a player failed to clear the puck from the zone, the other team got a point? Or if a player didn't hit the net or goaltender with a shot, the other team got a point. You'd see a lot more difficulty in drafting. But skaters make mistakes with typically no ramifications, and they shake it off and keep playing.
Goaltenders need to play a near perfect game just to keep their team in a game. You have to find someone who has the size and ahtleticism to play, has the technique, and then on top of all that, has the mental ability to be near perfect.
Look at Jordan Binnington. AHLer to Cup winner, to elite starting goaltender, to average starting goaltender, in four seasons. Focus and confidence can be thrown off by almost anything. Injuries, coaching, teammates, life, etc.
If you find a goaltender who can be good consistently, you stick with him, because that's the hardest trait to find.