#4 Fans will get back on his side
Seth Rollins was probably one of the most beloved Superstars in WWE for a long time. Regardless of his character, fans have always supported him due to his ability in the ring and his hard-working nature. But there is a breaking point to everything, and change is inevitable. Rollins faced Baron Corbin earlier this year, and it was a big downgrade from his feud against Brock Lesnar.
The downfall started there as the story wasn't interesting, and the feud lasted for months. After that, he took on The Fiend, which completely killed all his momentum as he started to get booed. It also didn't help that he was criticizing fans on social media for various reasons.
However, a heel turn could get those people back on his side and start respecting him more. It's what the fans want, and it's worth noting that he had some of his best matches a few years ago after he turned on The Shield. So he may be more comfortable doing that, which will only contribute to better programming.