What if Veidt/Simm was a thing, though
This would work best if they were two different incarnations of the Master forced into working together, right? AND THEY’D HATE EACH OTHER’S GUTS.
Veidt!Master is all old school and smooth as fuck and only ever wears tuxedoes. Complete with monocles and the optional pimpstache. He’s always immaculately groomed, soft-spoken and truly menacing.
Simm!Master is his usual unhinged batshit self, bouncing off the walls crazy.
And they’d drive each other nuts and wouldn’t get anything done until UNEXPECTED ROGER DELGADO shows up on the TARDIS scanner and basically does his long-suffering FFS face. AND OH GOD, I KNOW EXACTLY WHAT HE WOULD SAY.
"So these are my replacements? A dandy and a clown?"
And then they try to
bum the Doctor take over the universe and fail disastrously.
P.S. An alternative happy ending: Simm!Master wears the pink dress again for plot reasons. Veidt!Master takes one look at him and pounces him. AND THEN THEY DONE SEX.