How many times has Pearl showed up at the shop on Saturday in order to have his bike ready for Sunday? Careful what you wish for boys.
For the record, I agree with Pearl's argument for Saturday racing. Get it done and out of the way so I can focus on other things and enjoy the remainder of my weekend. OTOH, I know others feel differently and people will complain either way.
Promoters,
Don't choose Saturday or Sunday based on feedback from racers. They have proven time and time again that someone will complain, about something, every time. If you are are striving to create a better event, do whatever you want to make that happen.