Might Happen: NWA stars appearing at AEW events
The National Wrestling Alliance was once so big, so successful, and so influential that it provided serious competition to the WWE. Most of this came from the auspices of the biggest owner of the regional entities, Jim Crockett Productions.
However, when Jim Crockett Productions was sold to Ted Turner and eventually transitioned into WCW, it was a major blow to the NWA. While the promotion has still existed in some fashion ever since, there is little doubt that it is a mere shadow of its former self.
However, the NWA has been trying to change its status of late. One of the things they did to increase their market share was to be involved with All Elite Wrestling. In fact, they even allowed their champion, Nick Aldis (Magnus in Impact) to defend their world title.
Cody actually defeated their champion (which obviously didn't happen without the NWA's approval) which bodes well for future crossover events between the two promotions.