... ooof! Make sure not to burn out your wrist.
I would love the playable Game Over scenario that you're talking about. I like to think of myself as a patient person so I'm willing to wait longer for the update if it means we get more content. That said, if the implementation of it all gets too complicated for you then by all means either postpone it until you feel like tackling it again or just scrap it entirely.
One alternative way to go about rescuing the maid, if you decide to scrap the playable GO would be start the scenario out as an on-map event. Like, the trio fall for a trap or they let themselves get captured in a plan to rescue the maid.