You can go to
http://discussions.apple.com/ and the comments are seen and responded to by Apple staff. Many of the complaints/suggestions/feature requests posted there do seem to have had some positive impact on software revisions, though it will not happen overnight.
I might suggest a different tack there, however. They are Apple centric, of course, and a broad generalization, like three missing features in one app equating to "
Apple and its devices don't deserve the attribute "user centered/friendly" anymore!" will probably just be seen as trolling.
The Bandit