AFL really needs to understand that people don't want to watch certain clubs on a friday night. Teams like Melbourne, Western Bulldogs, St Kilda, GWS, North Melbourne will literally draw low ratings.
I think the big factor in that sense is blowouts. If there is a big club playing than a blow-out is hedged somewhat by the fans of that club....or people wanting to watch them belted. Nobody is getting anything out of Port smacking Melbourne other than Port fans