Tend to agree with you Eagle Claw. Not many rules in aussie rules refer to the "intention" of an act. No where does it say that a deliberate push in the back is more harshly punished or, indeed, that a accidental arm chop shouldn't be penalised.
Whether players are dropping to their knees deliberately or not, it is against the rules to intentionally, recklessly or accidentally make any sort of tackling contact above the shoulder.
There are four ways to solve this issue
1. change the rules to treat this sort of action in the same vain as ducking the head (hard to police but possible)
2. change the rules to make it illegal to take possession or dispose of the football whilst not on your feet. This takes away the advantage of "going to ground" whilst in possession of the footy
3. train players to not tackle players that drop their knees, but rather wait until they have gone to ground where their ability to have an effective disposal is reduced
4. train players to tackle better
I prefer option 4. Too many players tackle lazily, which leads to missed tackles, as well as these free kicks.
Richmond was notorious for missing tackles until 12 months ago - we have improved here fortunately.
This is a media beat up that will be forgotten by round 16 - someone can quote me on that!!
As for WCE getting 524 more free kicks in Perth (the actual topic of the thread) - it's called home ground advantage. One of the anomalies of our game is half the sides are in one city. Therefore interstate sides enjoy much better home support as a percentage and much less support away. A side like Richmond plays a great majority of home games where the crowd is maybe split 60-40 our way, not much more home support and hard to influence the umps a lot more than the Pies/Bombers/Dogs supporters at the ground. However, WCE play 10 of 11 home games in front of a crowd split 95-5 in their favour. Course the influence is going to be greater. Even when they play Dockers at home they enjoy a 75-25 split as Subi is not as big as the MCG.
I think you'll find their away free kick counts against Melbourne sides is a lot more against them than Richmond's away free kick counts against other Melbourne sides. One of the benefits of supporting a Melbourne based club is that three quarters of the games we play in are derbies. I wouldn't swap that to get a good run from umps every second game - NEXT TOPIC!!