It would be nice if forfeits weren't allowed in private league games. Especially as PL minutes or injuries don't matter, so it's not like there would be any downside to eliminating them.
At least in non-PL games you get training minutes when a team forfeits against you. While in a PL game, all you get is an empty box score & a wasted week. The extra PL game per week is a major reason why a lot of people are paying for supporter I'm guessing. It only seems fair that they should get a game?
Anyway, all BB would need to do is to generate a lineup like they do for bots. Or even just create a few filler players with all skills average (call him "Private League Pete" maybe?) or something like that. Really anything that would make the games sim & create a box score.