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.
In the past, I have declared my disgust toward season previews because of the fact that people often put down or dissuade interest from a show in spite of the fact that there isn’t much to know about the shows yet, and those people rarely do comprehensive research on the shows they are previewing. Not wanting to be a part of that negativity, I have researched the shows coming out in Fall 09 and am here to tell you which ones I’m looking forward to, and that you may want to check out. :D