CATS, and 40 variations of CATS based on current and past Tony Award Winning Broadway shows, would return for a triumphant multi-year return occupying every single theater house on Broadway.
How many Tonys would Chicago have won if it was set in Detroit? Would they have still called it Chicago?
What if Fiddler on The Roof had called itself Dear Evan Hansen, would Dear Evan Hansen have called itself Fiddler on The Roof? Could Zero Mostel have played Evan Hansen?
Assuming Sondheim being a woman and Andrew Lloyd Webber being trans would mean they'd get a lot less career opportunities, Annie would be even more likely to win Best Musical in 1977 because Side by Side by Sondheim never happens.
There would be a bigger impact on the 1988 Best Musical Award, because if both Into the Woods and The Phantom of the Opera didn't get produced; either Romance/Romance or Sarafina! wins Best Musical.
John Kander's career would be exactly the same but people would read a lot more into Mr. Cellophane.