#1 Over-dependence on Superstars from the past
WCW was known among fans as the company that took almost every renowned WWE star of the yesteryears, and featured them heavily on TV. Hulk Hogan, Roddy Piper, The Ultimate Warrior, Ted Dibiase, Randy Savage, and many others made a name for themselves in WWE in the 80s, and came to WCW in the 90s when WWE had begun looking towards pushing future stars.
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For years on end, WCW featured these wrestlers in high-profile PPV main events, all the while wasting the talents of the likes of Chris Jericho, Eddie Guerrero, Rey Mysterio, and several other promising athletes. Most of these young guns soon left for WWE and made a name for themselves over the next few years. AEW has incredible star power in Chris Jericho, Cody Rhodes, Kenny Omega, and a few others, but it should put its primary focus on stars like MJF, Joey Janela, and Adam Page, so as to build a strong foundation for AEW's future in the industry.