For some reason, the Big 4's offense hasn't really clicked in a long while. With only two of them on the floor the last four games, playing a two man game, things have become simpler. Pierce has always been very good at initiating half court offense, and KG's mid range jumper had always been killer.
Add to that a deadly three point spot up guy like MP3, and a dead eye mid-range shooter like Bass, and that attack started to click. Even Avery Bradley standing in the corner like a disciplined child hasn't hurt it too much, with AB cutting to the hoop a few times to receive baseline assists from Pierce when Bradley's man strayed too far in help defense.
When Rondo and Ray Allen get back, hopefully Doc will switch things up a bit. There's no reason why Rondo needs to initiate offense 100% of the time in half court sets. Rondo would be excellent after receiving a pass from a driving Pierce, and then continuing on to either take a layup or drive against a broken down defense to kick the ball out for an open three from Ray Allen or lay the ball down to Bass for a dunk.
Having three offensively oriented HOFers would naturally push a coach toward a team oriented attack, but the NBA has always need an isolation league. If Doc has an advantage in a 1-3 high pick and roll set with Pierce and Rondo, why not run it to death until the defense stops it?
Or if Pierce and KG are getting it done, why not milk it? Team defenses are better than ever, and any play that gets your better match ups the ball on a particular possession is going to lead to efficient offense. The way the Cs are playing defense again, that's going to lead to victories.