Cody always fit in with WWE and their style even when he was in AEW. It's different with MJF......again, like they did Cody Rhodes?
I just cannot see MJF's character ever working in WWE. He would definitely be watered down, just a matter of how much.
I could see him being a Roddy Piper type in WWE, which would be a watered down version of himself.
A big part of MJF's appeal is his razor-sharp verbal attacks, which WWE does not allow for anymore.