My favorite bit of Hulk lore is that he can just see ghosts, and this seemingly random ability is eventually explained to be a defense mechanism the Hulk developed because Bruce Banner was always terrified his deceased abusive father would come back to haunt him.
To be honest at this point IDGAF what MCU does with Bruce but I will regretfully show up because I have an unbreakable soul-deep bond with Mark Ruffalo Bruce Banner. Literally changed the course of my life forever