You should make it possible to add a page that shows a category cloud as seen on the support or forums page. Something like flickr. The cloud can be bigger or smaller based on the number of posts under that category.
I would love if you can incorporate something like that.
err, i’m not quite sure if you got what drmike and i meant. sending feedback refers to the blogger going to dashboard, clicking the feedback button on the top right hand corner and putting his/her two cents there. then s/he sends it to the wp team which will definitely be read. not all threads in the wp forum are read by the wp team.