I have included below some initial thoughts about some house rules to further capture the feel of the blood bowl game.

Let me know your thoughts fellow team managers....

House Rules:

Injuries:
Whenever a player is injured, roll a tackle dice.
"#" (defender down) - Badly Hurt (discard pile)
" " - Serious Injury (added to discard pile at end of next week)
"X" - Dead (remove from game)

At the end of a week, if you have less than 12 players on your roster (in your deck) then add normal team players that have been removed from the game to get back to 12

Campaign rules (ie, multiple full seasons... so multiple trips to the Blood Bowl)
Star Players:
All Freebooterz leave the team to try their luck with other teams next season and return to the star deck
To reflect the fact that the Star Players are often going to switch teams to look for the best deal, roll Tackle Dice for all Star Players
"X" - Star Player likes the choices of snacks in the changing room, and the cheerleaders are to their taste, and chooses to stay for the next season. Keep card in roster.
anything else - Star Player decides there are better offers out there and returns to pool. Put back in star player deck

If you have less than 12 players on your roster then add normal players that have been removed from the game to get back to 12

Team Upgrades:
You maintain some of the flair that you have earned this season to give you an edge in the upcoming season.
Pick one to keep... return the remainder to the stack of cards.

Coaching Staff
You can keep one of the coaches that has helped you this season. However the various sponsorship deals, wizards and apothecaries all think there are other deals out there.
You may keep one that includes "Coach" in the name. Return the rest to the stack.

Fans

You keep 10% of your fans rounded down
 

These look good and fun, and keep the flavor of the game going.

Looks great, have you been able to try this out yet? 

Ive also been looking for a way to make a player draft. 

Id love to get a prolonged tournament with my buddies or at a con.  Maybe a trophy or something to the winner.