Yeah I do agree with that as rosters and injuries definitely impact the game and sometime that can be last minute stuff. I like the idea of the 75% 25% split. Maybe what you could do is the 25% split is given to contestants who have a positive profit, but they also have to be one of the first say 10 entries.

That way pushes people to get in quicker and hopefully in the long run will have more contestants that was as well!