2. Bret Hart
In what comes to most fans as a surprise, Bret Hart is not scheduled to appear at Raw Reunion. A recent report suggests that the Hitman was invited to the show, but he turned it down. The Hall of Famer raised quite a few eye-brows with this shocking announcement, but it is unclear why Hart would refuse to show up.
Hart was recently seen at AEW Double or Nothing, where he unveiled the AEW World Heavyweight title. His recent affiliation and commitments with AEW may have forced him to refuse the invitation, but we can't say that with certainty. Moreover, Hart was attacked at this year's Hall of Fame ceremony by a fan. Hart may be skeptical of his safety in a WWE ring after such a dangerous event. However, Hart hasn't provided an explanation for the invitation's rejection.
The Hitman is arguably one of the all-time greats. His legacy is unparalleled and there will never be anyone that can replace Hart. It's a massive disappointment that he isn't going to be a part of the greatest reunion in WWE history.