Like this post if you want to be able to set a custom number of league games in franchise mode.
Bonus: custom number of innings per game with automatic stat adjustment (nb2k has something like this)
It is utterly ridiculous to be forced to play every game of a 160 game season or simulate a lot of them (I hate simulating, I want to be responsible for my stats). Road to October is [censored]. Nobody wants it, nobody needs it.
Next year this setting is a must.