100 rated players
During a season, go to "Settings" and turn salary caps off. 
Then, go to "Manage Roster", and make or edit a player. 
You can put all their stats to 100.


Extra teams and stadiums
Keep collecting cards until you get some stadiums and teams.


Random team selection
Select exhibition mode. Press L to choose a random visiting or R to get a 
random home team at the team selection screen.


Skip coin toss
Repeatedly press A + Start + Z (about five to six times) at the coin toss 
screen to advance to the kickoff.