Notwithstanding the rest of your comments, as a consumer I've had my opinions solicited via a number of "give us your feedback on the Nokia N810" surveys. I believe they showed up in the Tableteer RSS feed, and enticed participation via headphone draws etc.

Now, of course, that's not a maemo.org participation mechanism - and, as you say, we have no formal (or even direct informal) method for feeding back on hardware designs :-(

My gut says "lots" :-(