I'm actually OK with that.
Bullet Club can get replaced by a returning Suzuki Gun. And even though losing AJ Styles sucks, the way he's been booked it's kinda like he did a territory loop and did everything he could (and made the most out of it).
Nakamura is the real big loss imo. But then again, that will force New Japan to give his spot to somebody. I really hope Shibata and Ishii can get a main event nod, And also, I think he kinda saw the writing on the wall of him being forever behind Okada and Tanahashi. He's not getting any younger, knows the US audience loves him and is more receptive to him than any other current puro star, and he knows for a fact that even if his WWE stint is a complete flop, he will be treated like a WAY bigger star in Japan once he comes back, and there's a real chance he has some success and ends up being treated like HUGE deal when he goes back. It's a win-win situation for him if he can avoid any big injury.