That's hardly surprising, nor is it unusual for any team in my view.
Most teams would need their senior players playing well.
6 of whom you mention, Mcdonald, Bruce, Green, Miller, Davey and Rivers, are the players on our list with the most games played.
Sylvia and MacDonald sit 8th and 9th.
I'd say most teams would need 8 of their top 9 most experienced players playing consistent footy.