The writers and makers of TV shows are frequently a lot more fallible than we'd like to believe. They get caught up in what seems to them like a really good idea and lose perspective, which leads to deep frustration among viewers because they get some bits so very right, and other bits so very wrong.

I think you're right that a stronger, more experienced actress might have made a lot more of the role of Martha. It's a shame, but one we have to live with now. I found Rose and the Doctor grating at times in season two, so clearly nothing is perfect!

Overall, I think season one remains my favourite when taken as a whole. No coincidence that the one and only Who fic I've written is set in season one! But then if I try to break it down into favourite episodes and themes...not so clear cut. hmm.