I am so sorry too! Cas still considers himself a good angel and he hasn't had the benefit of going dying, coming back w/out memories, and going crazy - which all contributed to him barely coping by avoiding Heaven at all costs
alternatively ironically maybe jack will be the one person he doesn't break and so it'll just be him and the weird bird angel lucifer child standing there watching cas and sam sob
also omfg yes call Bucky a robocop pls