#2 Get better entrance themes
With the exceptions of Chris Jericho, Cody and Jon Moxley, the other entrance themes for All Elite Wrestling's stars were underwhelming and forgettable. They sounded generic, which puts you in a frame of mind that the stars you're about to see in the ring are generic, too. It's irrational, but that's what happens.
Hopefully Tony Khan and the Elite are aware of this and will hire a good composer to retool the entrance themes for All Elite Wrestling's stars before the TV show launches this fall on TNT. Good entrances and music means a lot in professional wrestling and this is something that shouldn't be neglected. They're crucial for creating a wrestler's persona and aura.
All Elite Wrestling thankfully fixed most of its production issues from All In and Double or Nothing. Fyter Fest was a notably better produced show. This is the one issue that remains.