Here is the best analysis of why the Star Wars prequels were so friggin terrible that I've ever seen. It's seriously long, though. Like almost as long as the movies. So make sure you have some time.
Conclusion: there was a lot more wrong with those movies than the actors. Actually they had some decent actors but gave them shit to work with.
I was referring to the old new trilogy as a whole since even when they did get a more appropriately aged Annie he still wasn't a likeable or sensible character. Moreover a good deal of Episode 1's issues wouldn't have been a problem if Annie had been older, Pandabear had been left on the shelf until Episode 2, and either Obi Wan running solo or Qui Gon being more like an aging statesmen that Obi Wan was escorting for the negotiating purposes (or at the very least Annie and Obi Wan having the relationship Obi Wan and Qui Gon had in that movie; minus the getting ganked by Maul at the end part). Maybe I should've phrased my previous post better.
But yes, I will concur that there is a whole laundry list of reasons as to why the old new trilogy failed. For instance Lucas wasting an entire film flaffin' about with the Chosen One's Midiclorians, Tattoine's Pod Racing, and Naboo's Gungans.