I don't see any good coming out of the Supreme Court of Canada overturning Gold Seal v. Alberta (and decades of associated precedents from the Supreme Court and the Privy Council).

By judicial fiat they would be doing the equivalent of playing a stack-crashing turn at Jenga, crashing down and possibly destroying livelihoods and lives because of their being unsatisfied with a nearly hundred year old decision determinative of the issue of internal free trade.  And relied upon ever since.

So much for certainty in the law.  I don't feel that "let the chips fall where they may" is an inspiring policy.