Best of luck on your paper. I'm with misa: I could probably only say negative things about it, too.
The only thing I can think about right now is probably very tangential, but I was thinking, How much does does this kawaii-ness influence the Japaneses' perception of the world beyond their nation's boundaries? And, more to my own personal interests, How much has it influenced Americans' perception of pop-culture icons in Japan? Because it seems like a lot of the popular media portrayals of Japan right now are more slated towards their "kawaii-ness," some descending even to patronizing condescension.
Of course, my idea probably won't run well in the paper, but here's hoping! Let us know how your paper turns out!