Best of all worlds is that the C's are able to cut down the Big 4 minutes, but still be in position to win games. This means minutes from Shaq and JO need to happen with Baby taking some serious minutes off KGs plate. Jeff and Delonte and Carlos need to also be playing well enough to give Paul, Ray and Rondo 15-20 minutes on the pine. I'm afraid we are likely to lose HCA to CHicago and LA (at least). Too bad. But I think the rest is essential, and the PT for the 2nd team should be helpful in the long run.
Remember that the other teams are also thinking about HCA v. rest. It's true that older legs should mean more rest, but everyone is tired/hurt at this time of year (Rondo probably needs the rest more than the Big 3). LA isn't exactly a youthful bunch either -- at some point they will be reluctant to play Pau and Kobe long minutes. Chicago, I think, may be going all out for the #1 seed. They probably need HCA, but fatigue and inexperience could be factors for them in the playoffs.