We have a league of 8 people at my store, and our league seasons will be about 5 weeks long. We already have newer players (some new to Blood Bowl altogether) Eyeing our league, and wanting to join.

At the end of the season, and before the start of the next season, we will have events like all-star games and The Crush. Before the new season starts, everyone must fill out a new team roster.
It seems that most people in the league like the idea of averaging the TR of all the teams from the last season, multiplying it times 10,000, and making that the amount everyone gets to start a NEW team with.
For Example, Average TR = 150 = 1,500,000 Gold for every player in the league to start their new team.
Keep the same name as your "old" team if you are keeping the same team, and not changing to some other race. Then, you can buy your "old" Players for your "new" team by paying 10,000 extra gold for each 10 SPPs (also, if the player has a number of SPPs not divisable by 10, you round up to 10 SPP for the purpose of finding out his cost).
So For Example, My Team, Beat-yo-face Squad, has a Lineman named Beatyo Uglyface that has 43 SPPs, I could buy him for my "new" team. He would have 43 SPP when I wrote him into my new roster, and he would cost an additional 50,000. At 43 SPPs, he will have 3 skills rolled into him, and very well could be a good stable part of this new season's team. I write Beatyo Uglyface into my new Season's roster for the Beat-yo-face Squad.
This way you can keep those familiar faces you've grown to love, so you can scream the same things your friends remember you screaming when you are making plays "Ok Jojo Beans, you can do this you turd! If you do this, there is a PBJ sandwich waiting for you in the dugout!"
Developed teams will only really lose a small part of what they like about their team, and new teams will get a leg up with the extra money. Couple this plan with a few pre-season events like The Crush and/or Drafting of some stars with a small amount of SPPs, like around 20, and you have what I think everyone can agree is a fair way to continue your Team's Ascension to greatness
Whaddya think?
Better to be Crippled in Body, then be Corrupt in Mind.