#4 A lot more creative freedom than WWE
One of my favorite segments from last year happened when Dean Ambrose turned heel on RAW. The timing was great because it happened on the same night that Roman Reigns announced to the world that he was stepping away as he had cancer. Dean Ambrose shocked the world by turning on Seth Rollins that evening.
And then, with this base to build upon, Dean Ambrose did nothing. Week after week, they just had him show up in the crowd and cut promos about getting shots because he hates the audience so much. It was a waste of his talents and I'm sure the main reason that he quit WWE.
From the looks of it, Moxley will enjoy a hundred times more creative freedom in All Elite Wrestling. The think tank is significantly younger and as has been mentioned a million times, every match will have some significance.