S14 Finale - Spoilers

Chuck cancels Supernatural.
I wasn't expecting Chuck to go all, "you're my favorite show" and be a Metratron about everything.... Returning evil is interesting imo, but that's going to be a very pact season - not sure how they are going to map out season 15. They are going to rehunt everything on top of God watching and be able to rewrite/change anything he wants?? Did Amara affect him in some way? And if Jack was this big problem to him, why didn't he end it in season 12? I know writers pulled this story (all of their stories) out of a hat. Was it their plan all along to have Chuck be bad? Either way, S15 looks like a "greatest hits" season.
My biggest disappointment is Sam and Dean, being one of many Sams/Deans. Chuck is too powerful and I know, he's God and all, but you should never have a character THAT powerful. I was expecting Jack to die, but it looks like he's not gone for good.
The Empty is another problem - there are too many "worlds", heaven, hell, purgatory, and now the empty. It reminds me of Once Upon a Time. If there is no end for characters, there is no moving on for anyone. I know, It's Supernatural, people always come back. But at least Charmed had rules/boundaries.