I think we should stop talking about the team's effort as if each player gives equal effort. I'm not sure I accept the idea that KG takes any games off. I also think Ray Allen plays at a very consistent, efficient effort level. I'm not sure I can ever point to TA not going full bore, though this sometimes leads to some very ugly plays.
Sheed, Rondo, and Pierce are the guys I might wonder about. Perhaps Perk if he is in a foul mood.