I don't think you are wasting your time. But I do think 1) they may have a too-small software team, 2) some issues may be more difficult than we know in order to change (underlying fault in the basic s/w architecture--a bear to try and resolve if possible) and/or 3) We need to be sure to send bug complaints through the "Bug Report" system the AC software. I have had email responses to bug reports I sent in through there so I think that is where they look first. The more often a complaint goes through there, the more attention it gets.
I'm not as sure about the suggested improvement though.