#1. CM Punk vs. Cody Rhodes
If CM Punk were to show up in AEW, he’d have quite a few fresh opponents awaiting him, with the promise of some stellar feuds on the mic and stellar action between the ring ropes. One issue we can all but guarantee that the Straight Edge Superstar would take up would be a rivalry with Cody Rhodes.
Since leaving WWE, Rhodes has enjoyed marked growth as a character, and particularly as a promo man. While pundits have mixed opinions of his ring work, he has undeniably garnered a lot more big match experience since leaving WWE and can be taken seriously as an upper card singles threat for his American Nightmare character.
Punk and Rhodes had incidental contact in WWE, but in AEW, they’d each be top tier stars and get a proper showcase for a war of words in particular, and to blow it off in the ring with a better match than they ever had a chance to put on in WWE.