This may well be the case for Clone Wars, there was talk early on about how George was starting to become more involved in production that he had planned to, I wasn't suprised by this and actually a little worried. History has dictated that the less control George has over his own project the better the outcome.
George is still the same guy he always was, It takes a lot of revisions, compromises and collaborations to transform his hack writing and stolen ideas into something interesting. without all that you have something akin to the prequel trilogy. I hope the series is good, or at least watchable, But I have my doubts. and I'm sure the network execs do as well.