I don't think his size was an issue last year tbh. I mean generally more mass/armor the better at Qb as long as you're not sloppy... But I don't think him dropping like 10lbs is really changing much unless he's just in general in better shape and it allows him to move a little better. Which again the pure # whether it's 220 or 230 isn't really the important thing to me for Cam (or most Qbs in general)..
I will say I hope he does decide to scramble to run a little bit more often when it's an open 7-12 yards. I still dont expect Titans to have the best Run game. Don't particularly care for their Rbs. Their Oline is probably avg at best. I don't think Daboll is anything special when it comes to running, but he often does have his Qbs run... That won't be the case much with Cam, but it would be nice and efficient for him to pick up 7-12 when it's there more often. Just gotta do it while not racking up the hits by sliding early or getting out...