There are some issues with how the game handles abbreviated seasons, which are a bit annoying. I'll likely file a bug report about it, but the things to be aware of:
* the game won't automatically reduce the length of minor league seasons to match your choice for your Major League
* the game will not automatically lower the 'days of service for one year' to match your season length
* the game will still calculate, when generating your league's original player pool, service time as if you were using a 162-game schedule. Service time is assigned in days, not in years, so if the game generates a 30 year old guy who is supposed to have 10 years of service (1720 days), and you change the service time to 86 days/season instead of the default 172, this guy will have 20 years of service instead, and will appear to have begun his career at age 10. That's the most annoying issue, since it makes guys hit free agency and arbitration way sooner than you want. Erasing all service time to start your league might help, or simming forward two decades before you start GMing would help.
* the game won't automatically correct H of Fame standards
There may be other issues I'm forgetting about too.
