Retractable roofs and rainouts/delays/doubleheaders are literally my top 2 most wanted additions to the game...
And for what it's worth, my favorite teams are the Mets and Rays, so its not like the roof situation directly affects
my home games
I really just feel that having open/closed roof states for the stadiums would greatly improve the game, in a lot of ways... especially in franchise mode.
There's just so many "quirks" that could come up over the course of the season if you have such an addition. And really, such oddities are a big part of baseball. It's just not baseball without 4000 variables to think about.
So I'm right there with you lol.