Seems like a natural progression to me, the prequels were as close to cartoons as live action can be. The shame of the prequels was that the overall story was actually fairly good, but the horrible dialog, wooden acting from everyone except Ewan fking Mcgregor (who personally saved Episode 3, imo) and cartoon characters (all together the Lucas factor) combined to create some mediocre films.
The last 30-45 minutes of Episode 3, however, were actually quite well in my opinion, and if I recall correctly, the Clone Wars mini-series that ran on CN was actually pretty good. Whenever the Star Wars movies take on a serious tone, I just find them so much more enjoyable.
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