Vincent
I had posted a suggestion similar to this last week. My suggestion though was to decouple the max engine pts from your level, similar to how drivers and staff have been decoupled from it.
This way even a level 29 manager can still have level 40 engines once they are brought to that level.
Good idea, since you cant get motor points for free, it costs a bunch of money or you need lots of patience to max out your engine.
Maybe Jack could add motor points to the daily donuts.