#1. Bray Wyatt and the Dark Order
Bray Wyatt leading the Dark Order would be the zenith of poetic endings and the start of something extraordinary.
Dark Order started as a dull and uninspiring faction in AEW and were pretty forgettable until one Mr. Brodie Lee took over and made them a force to be reckoned with. His tragic passing didn't undo his outstanding work as the Dark Order are still going very strong after forming an alliance with Hangman Adam Page.
Adam Page is not their leader, though. There is nobody more suited to that role than Bray Wyatt. Brodie Lee, fka Luke Harper in WWE, was Wyatt's protege in the Wyatt Family, and Wyatt taking over from where his friend left off would be one of the most emotional and powerful angles in modern wrestling history.
Bray Wyatt will get the chance to cement his legacy in the wrestling business by leading a group of misfits that his dear friend turned into a fearful group of warriors. There is no doubt that he will be able to take them to unprecedented heights. Very rarely do we see a match so perfectly made. Bray Wyatt to AEW should happen for this and this alone.