Think you hit the nail on the head there. My thoughts exactly. The dynamic has really changed now. They expect Rosie to take a forward spot and this coming season is Petan and Dano's last chance to prove they can be full time NHLers. I'd expect that whomever doesn't prove they can stick they will attempt to trade and if no one bites they waive them.
Scheif, Wheels, Little, Ehlers, Laine, Connor, Lowry, Perreault, Copp, Tanev are probably locks for spots out of camp. That's 10 forwards which leaves two spots on the main roster and at least 1 spot in the PB. Rosie, Petan and Dano are the likely candidates there. Could end up being our "4th" line actually...
Petan - Roslovic - Dano
Though depending on how guys camps go we could see someone force their hand but they would have to have a really stand out camp to do it. Vesalainen and Appleton are the only ones really capable of that in my mind.