Defensively, George is already pretty solid. I would like to see him take a bit more of a step offensively, because I think he has the skills to do so. He keeps the puck on a string and with the right situations, I think he could be a solid point producer, probably will never be a big goal guy, but I could see him being a 40ish point guy next year, 10 or so goals with 30 or more assists.
I love Sim's tenacity and I think he could be a 20 power play goal guy, if they parked him in front of the net, Danny Bois style. With some guys graduating, he may get a bit more PP time next year. But other then that, I think Sim's role will be a 3rd/4th line checker who plays a responsible defensive game and kills penalties.
McCue, I am thinking he could have a good year. He played really well at the start of the playoffs, but did tail off a little bit. I would hope, if he is taking an OA spot, he can come in and be a 60-70 point guy next year. That is a big jump from his previous career highs, but if he isn't performing at that level, you may have to move on from him. As it sits, the Knights don't have a ton of offense again, the top 2 scorers from regular season last year are gone, so if he isn't producing offensively, you need to fill that OA spot with someone who will. Or have him play the checking role and replace Humphrey's OA spot, if Humphrey isn't producing.