Considering that the Toronto Maple Leafs had the 28th best goaltending in the NHL, I think a finish of 12th place is quite good.
I think that any time a team out-performs its goaltending, they are likely on track for future success. The reason is that any team that can overcome bad goaltending is probably a pretty good team.
The Leafs are such a team, and since they are 12th while getting nearly the worst goaltending in the NHL, it stands to reason that if they got strong goaltending they would be better than 12th.
So are they capable of getting good goaltending?