This is a nice short article:
https://www.si.com/wrestling/2021/12/22/aew-dynamite-sting-greensboro-return
I think Sting and AEW have a firm grasp on exactly how long this should go on for, especially since it his chance to go out on HIS terms. Do you think the 2 following events will happen on his way out:
1. Challenging for a world title one last time, this case AEW and i think Hangman Page is the perfect babyface for Sting to lose to on a much hyped Dynamite
2. Making it official his last match will be against darby Allin at a ppv in 2022. Puts over Allin ofcourse, big celebration on following dynamite/rampage.
I don't think Sting has any desire to go beyond what he's doing now: Darby's mentor and occasional party match MVP. At some point he can put over an MJF and then ride off to do agenting or whatever full time.