#2 He would have had several 5 (or 6) star matches
Led predominantly by the Wrestling Observer's Dave Meltzer, NJPW has been clocking up a series of 5-star matches recently, with 2017 being one of the most impressive years for Pro Wrestling from an in-ring point of view.
The series of matches involving Kenny Omega and Kazuchika Okada, in particular, have been a testament to how high the bar has been raised. Not content with awarding them the full 5 out of 5, Meltzer decided to grade them off the scale with their first match earning 6 stars and their second 6.25.
If there's one thing fans normally associate with Daniel Bryan, it's his in-ring work. The mere mention of Bryan returning to Japan to take on the current roster of superstars is enough to make you salivate. If taking on Omega and Okada in one-on-one action isn't enough, imagine the bouts he could have with the likes of Tetsuya Naito, Kota Ibushi, Zack Saber Jr and Hiroshi Tanahashi.
The WWE landscape may have changed since Bryan announced his retirement, and there are still many dream matches the American Dragon can have by staying, you can't help but feel a little disappointed when you consider what could have been.