I think you're getting a little over excited, not that I can blame you.
From a neutral point of view, I'm excited for prelim finals every year. The bigger the crowd the better, but if it was up to me I'd take an even crowd split any day. For me there's nothing better than the energy that's created by two opposing sets of fans displaying their passion. I want this even when Collingwood are playing.
It's what makes footy in Melbourne unique in pretty much the whole of world sport. I can't think of any other league or sport that would so regularly get large crowds from each team in attendance.
I agree to a point but we get those even crowd splits all the time so it's unique to the rest of the world but not to us. It's good to have some variety and the yellow and black cauldron is something I'm really looking forward to on Saturday.