I personally don’t see much of a change other than tighter/exciting contests in the last few minutes. The 666 rule has hardly changed the game, but more so the coaches are being tighter in their defensive strategies. The better teams are still scoring like most other years a la Cats and Pies.
I think we have been focusing more in our defense this year, no doubt. Our fine-tuning over the recent weeks is a style that is suited for Finals footy. Really looking forward to the next month if we can continue to advance our game style further or whether we regress under the might of the better upcoming teams.
I haven't checked stats, but my impression is that there are a lot more low-scoring games this year. One goal to two at half time a few weeks ago.