La Mer,

Here's a compromise option perhaps you could think about.

Pick out the best TWO races in Sydney and Melbourne each week and people then have to pick out a 'lay' in just two of those 4 races. That way, people will get a little more choice, but we'll still basically be concentrating on the same races. That means we'll still have some conflicting opinions which is good. And also not a mountain of work for you.