Suggestion
Historically accurate post-season schedules, both for the World Series and other playoff rounds.
Reason
The game now has the proper historical regular season schedules for historical leagues, so it's time to get the post-season up to the same standard. It also provides more play challenges, since a World Series played entirely on consecutive days requires different managing by the game player than a World Series played under current-day rules, for example.
I have an idea of how this could be done by using a schedule file system similar to how the regular season is handled. But I won't bore everyone with those details at the moment - I'll save that for when the suggestion is approved!
Priority
High, as far as I'm concerned.