Mark Stevens said, after the top 8 being locked away early this season, the AFL is seriously considering altering the Draw next year along the 17/5 split fixture idea mentioned previously. Apparently, has the support of the AFL head honchos and clubs.
Each club plays the other once (first 17 H/A rounds) and then ladder is split into three groups of six (top, middle and bottom) and each club plays the other teams in their respective group once more (last 5 H/A rounds). 
So if applied to this year at round 17:
Top 6:                    Middle 6:                  Bottom 6:
Hawthorn                Geelong                   Richmond
Adelaide                 North Melb.               Carlton
Bulldogs                 Port Adel.                  Gold Coast
GWS                      St Kilda                     Fremantle
Sydney                  Melbourne                 Brisbane
West Coast             Collingwood              Essendon
You can't rise or fall below your respective group level. So in our case, we couldn't finish any higher than 13th.
Thoughts?