Fair enough LT. Personally I'd prefer to see Pettifer get another go, whilst not doing much, I'd take 3 goals from a forward pocket any day. I think Tivendale could use the Bowden treatment to get his form back, I know he's been told he's got 2 months max to prove himself, but he's played a long streak of consecutive games now whilst being in pretty poor form, continuing to play him hasn't worked, dropping him is the obvious next step.
I agree with your positional changes though, and that to me is more important than the players in and out. Tivendale needs to be moved out of defence, as does Johnson, both have more to offer the team elsewhere and deficiencies won't be exploited as blatently. Bowden should be moved back into defence, as it is only when he is there that he becomes accountable. It should also lift the standard of disposal out of our backline. No need for Hall given Stafford should come in and the Hawks are fairly short, so Joel would be a good match for someone like Holland or Barker, whom he can run off easily.
Forward line still looks good to me and should be given another game to work together. Richo, Simmonds, Brown, Krakouer, Campbell and Deledio make a great starting 6.
I still like the midfield combo of Cogs, Tuck and Hyde and think they have a lot of improvement as a group. Tuck and Hyde have been the two best players at sticking to the gameplan and deserve credit for that while so many others abandoned it when the going got tough. A key will be who comes into the midfield in the 2nd quarter, things fell away when we changed it against Geelong. A fitter Brown and Johnson should help in this area.