Everyone is currently fawning over St.Kilda and Bulldogs and as much as they have in their favour, both teams are going to lose key personnel over the course of the next year, when they won't be in Premiership contention:
St.Kilda: Riewoldt, Montagna, Fisher, Gilbert, Ray................ A couple of those guys aren't easily replaced.
Bulldogs: Murphy, Boyd, Morris, Minson, Picken...................Again a couple of these guys will be hard to cover for.
I still see these teams as having to do quite a bit to get a good team balance but it's quite attainable.
I agree with Finey who said yesterday that Collingwood are best balanced.
Essendon, North and Richmond are very unbalanced as much as they've been touted as possible Premiers over the course of the last two years.