Sounds reasonable, score condition should be switchable. I'd also remove the money lose condition, but that'd need engine change: if you're above your maintenance by 23.55 of the last day of the month, the game should stop, take you to the basescape, and force you to sell stuff until you have enough $$$ to cover your maintenance cost. If you can't (highly unlikely), then the only option out is the 'resign' button.