Really early to predict but mine would be (if McGregor returns) ~
Guy-McGregor-Josling
Tabak-Rees-Perreault
McCombs-Hill-Saye
Redick-Burke-X
Hatcher-Kammerer
Reesor-X
Dillingham-Jako/Hogue
Langevin/Lamour
If this is how it plays out means Sarnia most likely traded Martin & Grima. Not sure Egert will have a market.
Hopefully throw in two imports, first & 2nd round picks (maybe 4th/5th) in OHL draft & hopefully one or two of Miller, Nodler, Schingoethe, McCarthy (all USA).
On defence I would expect that Brendan Kennette will also be in the mix for a job. There could also be at least one Import defenceman and at least one 2003 born defenceman also in the competition for a job besides the guys you have listed above. If one of the US born flyer picks can be convinced to sign the competition will also heat up as the other players get bumped down the depth chart.
For the forwards the top 6 you have listed already look good and that competition could intensify depending on who they draft in the Import draft. ( or if the get lucky on one of the flyer picks reporting ). I think there is a pretty good chance that McGregor and Josling should both be back for their OA years and if available I would expect that along with Hatcher that's who the team will keep.
The real competition among the forwards should be in the bottom 6. Along with some of the bottom 6 forwards you have listed above ( you could also include DeGurse into this group) you will also potentially have 2 Import Forward players and at least 1 ( any maybe more) 2003 born forwards in an intense competition for those jobs. This where developing players in house really pays dividends,
I could also see Sinclair wanting to add at least another 2000 born player to the mix because the team is so young. There's no question that some of the 01 and 02 group that currently have cards will either be moved out or will be cut.
The good news for the fans is that the team looks like it should have a really solid top 6 forward group and top 4 defence and that the competition for the rest of the jobs should be intense. The other good news is that both Lamour and Langevin look like they both have a lot of potential and either might develop into a solid starter in this league.
My prediction is that this team should be Top 4 in the West next year even with the loss of some of the top scorers after this season. The real payoff should be in the season after when the whole 01 group hit 19.