I've always felt animation would be the wrong format for Dresden Files, most people don't realise it's harder to make a good animated film, even harder for series. The cheesy result impression is always a bigger risk in animation because of smaller talent pool available in the animation industry, on the flip side it's easy to get trapped in melodramatics as many animes shown over the years.
Action scenes might've seem to be the major point for an urban fantasy story, but backbone of DF's actually drama, adult dark drama even, which is much much easier to accomplish in cinematic live action with the right set of creative people, especially actors that understand subtleties.
edit: there's a reason it's kind of a formula now in Hollywood that many scifi films/series established themselves in live actions before releasing animated feature/mini series as support/fillers/alternate universe.
