Originally Posted by be more pacific:
“Clara reminds me of Melanie Bush in that she simply appeared fully-formed with a set of novelty characteristics and we're just supposed to accept how great she is.”
Ohh that's a tad harsh. "Reminds me of Melanie Bush" is not a phrase I'd want to hear very often...
I actually like Clara up to a point, and find Jenna's performances to be strong, but I know exactly what you mean.
To me Clara seems to be more a 'Doctor Who Companion' than she is a fully rounded person. There seems to be little substance to her - for all the attempts to paint some kind of background (the kids she looks after, the sad story of her Mum etc) Clara still doesn't strike me as a
real person in the way that Sarah, or Liz, or Ian, or Jamie did. Donna had a background, and a family, and they were believable and a means of identifying with her. Same with Victoria, and with Tegan or Jo or Martha and many others.
Somehow, and I'm not sure how, Moffat's companions come across as a little false, there's something not quite believable about them, Amy and Rory, much as I was fond of them, didn't seem to inhabit any world that I recognised (unlike the world that say, Jo or Ben 'n' Polly came from).
To me Clara seems like a culmination of this tendency, slightly divorced from 'our' reality, only existing as a fictional archetype. For all her faults, Rose was a more successful Companion character, because her Mum and her dopey boyfriend and her flat were things that most of us could readily identify with. And she was written in a way that we could empathise with. Somehow I don't get this from Clara. Which is a shame, as I do so want to like Clara more than I currently do.
edit - while I was writing this quite a few people have posted very similar points. Interesting that we all feel like this. Moffat please take note - we want real characters, not plot devices!!