The first roles that I would’ve heard Hanazawa Kana in, had I been able to ‘hear‘ seiyuu at the time, were Kajiwara Sora in Sketchbook ~full color’S~ and Potemayo from the eponymous anime, both of which aired in late 2007. The irony there is that the former is a character who’s too shy to speak aloud—so all of her dialog is mental narration—and the latter is a 2-foot moeblob who can only say two syllables per breath and mostly makes noises. —Not exactly roles that tell you if an actress is going to be good, in spite of being leads.
I am of the mindset that an opinion should be made based on research in any situation. I hate to hear people bitch that ‘all mecha sucks’ when they’ve seen exactly two shows from the genre (this seems to be the case for many.) I am sick of people calling a show ‘cliche’ when the show is intended to be homage or parody. These are all things that a little research would show to anyone. Whether or not you like the show is based all on you, but before you open your mouth to the world, you’d best know what you’re talking about. That’s why I’ve gotten rather tired of people making uneducated remarks about studios, especially those that supposedly ‘suck.’