As an Orioles fan I'd have been happy to see the season end the same day it started. ¯\_(ツ)_/¯
But as long as we are wishing for stuff that'll never happen....I'd like them to shorten the regular season (154 games again?) and have teams toss in some scheduled doubleheaders. End the thing 10 to 14 days earlier, have every postseason series at least a three-gamer (preferably five). Let the October Classic finish in October.
My last (and even more remote) wish is for daylight WS games. Yes, that one is entirely nostalgia-based.
I have a lot of fond memories of the nuns rolling TVs into our classrooms to watch Series games in the early 60s. And I remember racing home to catch the end of the 7th Game of the 1960 Series. My Mom, bless her soul, would try to catch me up on what I had missed as best she could given her limited baseball vocabulary. </oldfartmusings>