#2. Braun Strowman squashes Shane McMahon at WrestleMania

One of the unfortunate things about the WrestleMania feud between Braun Strowman and Shane McMahon is the fact that it's one of the most uninteresting matches on the card.
While it may look good on paper, there isn't much heat behind it. The only outcome that could benefit Strowman is if he were to squash McMahon in a one-sided match. It should be a good display - and different from The Prodigal Son's normal WrestleMania matches. Since Shane McMahon is unlikely to appear post-WrestleMania, nothing can go wrong with a good old-fashioned squash match.
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#1. Shane McMahon wins, but doesn't get the last laugh

This would be another bad way to go about the finish at WrestleMania. If Braun Strowman was to get a big victory, Shane McMahon could still get the last laugh post-match by standing tall. But it also could work the other way around. McMahon could get a controversial victory, but still get decimated post-match.
That way, WWE could give Strowman the last laugh at WrestleMania.