Forgive me if this has been done to death here, I’m relatively new to this sub. I personally always felt it was more poetically beautiful for Bojack to die. The tragic (anti)hero meeting his end after a chaotic life of destruction to himself and everyone around him. I don’t hate the ending we have, but I always felt there was a certain beauty and closure that felt right
It wouldn’t have been powerful though. It would’ve been cliché and goes against one of if not the biggest message of the show: you have to deal with the consequences of your own actions.