All spoilers must be tagged!
Holy shit seriously!? This is one of my favorite manga. I really hope it gets a better adaptation than all of his other works. I'm also a bit worried that people will fall off of watching it early on since the first act can feel fairly generic at times, even though the second act is amazing.
The trailer has me feeling cautiously optimistic that the action will be better than Biscuit Hammer's adaptation, but I'm still a bit worried. This author writes amazing manga but they've all gotten fairly poor anime adaptations. 3 cour is a good sign though, they probably won't rush it.