#4 CM Punk could turn heel and start a feud with Sting
CM Punk has been a face since he joined AEW, and has even fought alongside Sting and Darby Allin. This has worked perfectly for AEW fans, who have given him a roaring welcome in each of his appearances. But it's a point to remember that the heel segments of his run in WWE were also very well-received. The Straight-Edge superstar turned into a fanatic cult leader, trying to turn people to his 'Straight-Edge' lifestyle.
After The Best in the World's babyface stint in AEW gets stale, a new chapter with him as a fanatic heel would be effective. A great starting point for that would be a match against Sting. As a heel, Punk could use unfair means to get an edge over The Icon and win, handing the WCW legend his first loss in AEW.
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#3 Malakai Black is gaining popularity even as a heel
Malakai Black is currently steamrolling in popularity among AEW fans. Originally intended as a heel, Black has evolved into something much more complex. Furthermore, the formation of House of Black is generating a lot of hype as well.
Although Black was the heel against Cody Rhodes, crowd reactions were still in favor of the Dutch Destroyer. This anti-hero persona can be put in the same ring against Sting. A well-planned storyline could pit The Icon against The Hellion in a high profile match.
Sting could possibly go down if this match happens. Black is not averse to using dirty moves to achieve his goals, and Sting coming under his radar would not be easy for the veteran to deal with. This could very possibly lead to Sting's first loss in AEW.