Send bug reports and enhancement requests to Apple via its Bug Reporter system. To do ths, join the Apple Developer Connection (
ADC)—it's free and available for all Mac users and gets you a look at some development software. Since you already have an Apple username/ID, use that. Once a member, go to
Apple BugReporter and file your bug report or enhancement request. The nice thing with this procedure over submitting feedback is that you can send attachments, get a response, and get a follow-up number; thus, starting a dialog with engineering.