15x19 was supposed to act as the "season finale," with 15x20 being the "series finale" according to the writers. Either way, this was the penultimate episode of the entire series & it was an absolute letdown in my eyes. The build up to the final fight vs Chuck was weak. Michael & Lucifer were brought back for what? I feel like they served no purpose in this episode even though they technically did. I didn't like how Jack absorbing power was revealed AFTER the fight, just felt like it was clunky storytelling. Then once the pitiful fight vs Chuck is over & Jack becomes the "new God," he brings back everyone.. except for Castiel & all the other people Sam & Dean care for? Makes no sense. Maybe 15x20 will reveal that they all were brought back, but then again, the writers said the series finale will be like the old days with just Sam & Dean out on the road (hopefully this is misdirection & we actually will see everyone return).
Also, I was at first confused by them showing flashbacks of all the good times throughout the entire run of the show as I figured that's something that would be shown after the actual series finale.. but it makes sense since it was showing a recap of all of Chuck's story & 15x20 will be the first and last time we see Sam and Dean not being written by him anymore.
All in all, I just feel pretty disappointed in how Season 15's story played out and ended. There was so much potential this season & it feels like the writers just didn't know what to do for the most part. Really sucks, but hopefully 15x20 will be the amazing sendoff that everyone who stuck with Supernatural all these years deserves.
Also, I was at first confused by them showing flashbacks of all the good times throughout the entire run of the show as I figured that's something that would be shown after the actual series finale.. but it makes sense since it was showing a recap of all of Chuck's story & 15x20 will be the first and last time we see Sam and Dean not being written by him anymore.
All in all, I just feel pretty disappointed in how Season 15's story played out and ended. There was so much potential this season & it feels like the writers just didn't know what to do for the most part. Really sucks, but hopefully 15x20 will be the amazing sendoff that everyone who stuck with Supernatural all these years deserves.