Maybe it's just because my expectations were low, or because I chose not to view as a movie but rather as a TV pilot, but I think it's just fine. I didn't find Ahsoka annoying at all, and I was quite impressed with the visuals.
I suppose I might have been disappointed if I had actually bothered to see it in the theaters, but knowing it's really just the pilot episode for a TV show made it a lot easier to take.
I *did* see it in the theaters ... and while it had its flaws, I enjoyed it for what it was at the time. Looking back on it now, knowing how the series developed, gives it an added bit of nostalgia for me. Not only that, some of my major critiques (such as the character design or Anakin being given a Padawan) ended up becoming irrelevant because the storytelling was so good.