I often combine franchises in some way to put a spin on a piece. For this I thought the idea was glaringly obvious. Tony Stark built his heart ARC device to keep him alive and power himself in his armor but who else has a sort of chest plate regulator and is encased in armor, with power? None other than the Dark Lord himself, Darth Vader.
It’s just a fun look at one aspect on a character that would fit well on another, but it would be a significant enough change to be compelling….or just funny.