Over the last few years I have PM'ed the moderators when necessary and yes in every single case they have responded. Your aim that we PM to jump ahead is misguided. The job they do is that of an ombudsman. They are the interface between us and the people above them. Right now though it looks like this is not the case and that is dangerous as support puts problem to the bottom of the list which may makes a solution impossible.
Same experience, but all that proves is that you (and I) had legitimate reasons for PMing. That is not necessarily the case for other people. While this is pretty much a WAG, of course, I'd bet most messages they get do not need to be sent.
I've seen too many impatient people attempting to escalate their problems above the level that they can, and should, be handled it. Not just in ROM, everywhere else too.