#1. Why Edge should face Drew McIntyre: A great opponent to win World title #12
If Edge vs. Drew McIntyre were the direction that WWE goes in, then it's clear how the match would be promoted. The match's entire promotion would likely be based on Edge's attempt at a 12th World Championship.
We mustn't forget that when Edge retired in 2011, he was the World Heavyweight Champion. Not only did he successfully defend his World title at WrestleMania 27 against Alberto Del Rio, but he retired as the World Champion.
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It's a title he never lost, and while the World Heavyweight title has since been unified, an attempt at World Championship goal is the objective. Edge going for a title that he never lost would normally mean that he could enter title contention right away, but a second Royal Rumble win only adds to the story.
A feel-good WWE Championship victory at WrestleMania 37 would be a good way to end Drew McIntyre's second World Title reign. It wouldn't damage him, and Edge would get his 12th World Title.