[greenrebellion]

It really depends on what type of league you want to create. Do you want all leagues to be on relatively equal footing? Or do you want teams to have a clear advantage upon reaching the upper leagues? If you want the latter, than you should use some mix of the league reputation settings, player creation modifiers and financial settings in order to manipulate the leagues and create clear advantages for upper tier teams.

For the promotion / relegation league I run, we keep the three tiers on equal footing and just allow GM skill to determine where the chips may fall. I had looked at setting up a single player promotion / relegation type concept but since the AI isn't really programmed to think in this manner, felt it would be a league structure best suited for the online realm. Promotion / relegation online leagues have really taken off in the past year or two, so there are several options if you end up delving into the online world.