I would be very surprised to see wrestlers like Orton or either of the Usos jump ship. These are guys from pretty solid WWE families who have been treated very well (exceptionally well in Orton's case) by WWE. That they would leave good situations just to wrestle new opponents sounds like a kayfabe fantasy more than anything else. They're probably all smart enough to use AEW as leverage though. I also think that they would be largely exposed after having pretty much only wrestled in the WWE system, at least short term, but who knows. Would be interesting to see at the very least.