This idea is for a more a more story-focused part of the game
After beating the ||Collector with the King outfit,|| you would go ||to the Crown on any difficulty above 3bc and beat the Queen with the King skin.|| When you do, there will be 2 options; the normal End Her option, and a second option that'd help her up. You'd gesture which would imply that you've had a change of heart and would want to solve the problems of the island (malaise). Then you would go back and fight the Time keeper and The Hand, convincing then to help you, and the queen would get the Servants. Then you would have the option to either get the Giant or the post- panacea Collector to bring with you to find out what is going on. For both, you would talk, and during the convo they will attack you and you would have dodge and parry the Giant/Collector's attacks. After that, you and your comrades would go beneath the slumbering sanctuary and there'd be a new area (name pending) where you would, with each boss help deal damage throughout the fight, fight the source of the malaise that's lumping chemicals into the sanctuary. Was thinking it would be something like the God that gives curses and stuff, or the thing that was in the cocoon in the sewers.
Idk