That's the thing, I think making her more like a normal teenager didn't sit well with the readers who expected that she'd be more like Clark reflecting the fact that she has 'super' in her name. Didn't want the 'normal' in their 'super' hero comics.
I think a more conflicted, trying to find herself teenager would have worked well had she been written consistenly and actually dynamicaly changing. Her road to being more superheroic could have been interesting, if written well. But then I like dynamic characters that are allowed to grow. Yet the writers looked at the criticism and the sales and kept changing things.
I agree that Boomer was great; it would be nice to see him in Kara's title again :) Perhaps some other non super (traditional) characters as well.