I've watched a couple of Hutton's games, and while he's cooked, the team in front of him is at least as bad as he is. They hung him out to dry so many times it's like they were doing it on purpose. I've seen some Coyotes fans trying to suggest that an NHL caliber goalie of any kind will steal the occasional goal, but an NHL caliber team will consistently play far better D, too.
So, sure, get a better goalie if at least because it's more fun to watch, but if you aren't also improving the skaters, it's not especially practical.