#1 Limit 50/50 booking
WWE dosen't need to outright stop 50/50 booking, especially since it hurts the possibility of extending feuds and allowing them to grow, but they need to be more careful on when they implement them. They also need to do their best to help the superstar that lost gain their momentum back, which will at least help in preventing fans giving up on them.
If nothing else, 50/50 booking is a powerful tool that can be a very useful in storytelling, but it is also something that can be damaging if used in the wrong way. With that being said, WWE needs to watch how they use it for now on and make an effort to help build up the superstars that have been affected by it.
Charlotte Flair to return and wrestle a CURRENT CHAMPION?
Hopefully then superstars like Bobby Rhoode, Finn Balor, Bobby Lashley can gain some ground on the main roster again and go on to do great things in the main event scene. If WWE dosen't do this however, they risk a future where stars keep leaving them for places that allow their character to truly thrive.