EIL your missing a couple more points...
No point having loads of low powered classes as NOBODY CARES, who wants to go watch a load of slow shit running? We already have to watch a load of FWDs running 14s FFS...
And TIME/SPACE, why have any more cars running than already? Jus means more time watching slow stuff (getting bored) while waiting for the quick stuffs turn.
Im glad you dont run the event, every car would end up with about 2 runs each and itd be the last TOTB ever as itd be shit