Mt Shark /Tent Ridge gets similar snowfall to Sunshine. Most other mountaineous regions in AB get substantially less snow.
I agree that Sunshine and Louise and even Norquay should expand, but that would be unlikely.
Louise has the most potential :
-Hidden Bowl beyond the new Richardson's Ridge expansion
-Wolverine Ridge, Wolverine Bowl and Purple Bowl to the skier's right of Larch. This area was removed from leasehold in exchange for West Bowl
-backside of West Bowl
Sunshine:
-lift service lower part of Delirium Dive
-open up all of Wawa Ridge, including its backside
-backside of Standish down to Rock Isle Lake
-Twin Cairns above Standish
Norquay:
-terrain beyond Mystic Ridge looksike it would have more sustained vertical, higher elevation and more favorable snow retention
Banff also needs more hotel rooms a d housing, again unlikely