I think more isn't necessarily the key. Better and more diverse is more important imho. V8SC, even non-points races, will draw a crowd pretty much any time, and there's something for everyone at the Melbourne event.
It's difficult to say any particular type is best. Personally when I go to an F1 race weekend I prefer to see open seater cars, the Porches dont really interest me. We don't get the V8SC, so cant say if that would be of more interest, but suspect not with much of the Silverstone crowd.
Edited by Clatter, 02 January 2017 - 00:28.