Draft includes better 19 year olds.
GDP - guess your opponents tactic for a boost in team performance
Decrease of effectiveness training GS each time you use it during a season
Salary changes to combat LI
Change price of home game tickets every game
Hoarding tax for keeping massive amounts of money
Fans boycott after 7 consecutive losses to combat tanking
That gets you started
A ton more supporter stuff (court design, player nicknames, etc) and other stuff, read the season news for the recent past