MAF is just frustrating. He'd make a game long series of amazing saves and focused tending, only to misplay it behind the net and lose.
He has decent enough wins totals, GAA and SV%, plus multiple Stanley Cup wins that he'll be a real strong candidate.
He'd be a shoe-in if he'd managed to ever get personal trophies, too.
But I think his longevity of playing at a high level will do it.
Modern goaltending is hard to rate. Well, harder to rate than the decades up to the mid90s I think. Skaters are so good that 4th liners have skill enough to score pretty goals. A talented goalie can only do so much anymore if the team in front can't help out. You plop Dryden out there today, we probably complain he sucks.