Hey, I was surprised, I didn't think Flashback was that bad either. Well, until the tacked on obligatory Kirk worship in the final 3 chapters. I was REALLY expecting a ton of TOS worship and she pretty much avoided that most of the way. None of the characters talk or think they way I expect them to but that's not always a negative in a Voyager novel.
Well, since hardly any of the characters, especially Janeway, talked or behaved the same way from one episode to another, getting the characterizations spot-on in a novel can be a little dodgy.
In general, I like Diane Carey's approach to Janeway. I do think Flashback
is probably the best example of it, though.