The plays where Rondo pounds the ball at the top of the circle for 18 seconds are not Doc's plays ... he has said it many times, to the team and publicly: He wants them going to the basket, all of them, and hates it when they walk the ball up and end up with last-second, forced, ugly jumpers.
Easy offense is fast offense, pushing the ball and attacking the basket. The problem is, half the time when Rondo gets out on the fast-break, he's all alone! That doesn't work ... the whole team has to run with him, and you can see his and Doc's frustration when they don't. Sorry, but Doc's offense is far from unexecutable or complex, and he shouldn't be carrying the blame here.
His rotations are seemingly questionable at times because he's still working on cohesive combinations and clarifying roles, (which is up to the personal input/work ethic of each player), and it takes time. But the primary offense from him is push the ball, attack the basket, and good things happen. It's not rocket science, and he hates the half-court game as much as anyone.