Speed
Cavendish
Petacchi/Farrar/Haussler/Goss/Greipel
EBH/Bennati
Boonen/Freire/Hushovd/Sagan/Rojas
Survivability
Haussler/Hushovd/Freire/Boonen/Petacchi
Rojas/Goss//Bennati
Sagan/EBH
Cavendish/Farrar/Greipel
Anyway, that is just me thinking out loud, I'm sure you can pick out inaccuracies.
You expect Petacchi to make the finish under any circumstances simply on the amazing consistency he's shown in this race. Question marks over Sagan, EBH and possibly even Goss as to how well they will handle the journey. I don't expect Sagan or EBH to make it, even though they are considered better in tougher races than Cav/Farrar/Greipel, so that's a bit confusing. It's not just about surviving, it's about surviving with enough left to make use your speed. Experience should be a factor once it comes to the sprint, so big points for Boonen, Petacchi and Freire.
Anyway,
Petacchi
Goss
Haussler
Boonen
Freire
Cavendish, Greipel and EBH to get dropped (all this talking up Tyler has convinced me he will make it).
Something in the back of my mind telling me it might be a split finish this year, but then you would just say Gilbert a thousand times.