#2. Adding so many big names could stunt the growth of younger, homegrown AEW stars.
AEW has done a great job of building young stars. It was clear from the early stages that Sammy Guevara, Jungle Boy, MJF, Darby Allin, and Kris Statlander were primed to be the future of the promotion.
Britt Baker was already extremely established before joining AEW. Adam Page could have also been a part of the above group but he was on the rise with the Elite before AEW's formation.
Allin is 27-3 in 2021 while MJF has a career record of 27-7. Statlander is 21-1 this year. These stars are the building blocks of AEW's future. While Allin, MJF, and Jungle Boy might not suffer from huge names joining the company, others might.
Private Party has potential and need some time to grow. They've been paired with veteran Matt Hardy as part of the Hardy Family Office. That faction, unfortunately, seems more like a stepping stone for faces. Along with the Butcher and the Blade and the Hybrid2, the group loses a lot more than it wins.
Powerhouse Hobbs is a homegrown star and part of Team Taz. He has a good record but most of his important matches have been losses. He has fallen to Adam Page, Christian Cage, Orange Cassidy, CM Punk, and to Cody Rhodes and Darby Allin in tag action.
Falling to big names like Punk is fine. It's hard, however, to take him winning over a star-like Page seriously due to booking patterns. AEW has utilized a lot of outside interference, including using that as part of the reason why Miro defeated Allin for the TNT Championship.
Hobbs has shades of Big E in him in that he's a powerful and athletic big man. Wardlow is 18-3 but most of his wins have been racked up against enhancement stars on Dark or Elevation. He has also lost his important big matches. Wardlow was defeated by Chris Jericho, Cody Rhodes, and Page.
Wardlow is similar to Hobbs but has been saddled as an obstacle for heroes to overcome. If more huge names join AEW and feud with MJF, he'll likely be forced to eat more big-match losses. If he breaks away from MJF, that would be great.
With big names joining AEW every few months, it will be harder for stars like Hobbs and Wardlow to progress. Big names in the industry take up the top spots and headlines. That makes it hard for lesser-known names with potential to move up the card.