Originally Posted by
monkaTOS
Pretty certain they actually read all posted feedback and tweets. They don't often reply in public forums, but if you have a track record of good feedback, they'll know who you are if you talk to them at Blizzcon. I'd advice creating a separate (short, to the point) post. One per topic. If you can fit in the math in the post, then do so, otherwise, put a link to your google sheet with the math. You have to be specific. Quite often they are not looking for feedback on "broad" issues (like "store mounts have destroyed the social fabric of the game"), they are looking for feedback for specific features ("ability xyz feels bad becayse zyx").
Getting involved in class discords is a great way to increase your visibility. Work your way up there and perhaps through Bay's show and/or Wowhead articles. Devs pay attention to those things.
Fairly certain those two are very low on the list of public voices Blizard is interested in talking to. Especially Bellular, because he doesn't actually have anything useful to say to a dev (Preach has gotten better in the last few years, ever since he split with Ghosty - I think he was probably on Blizzards "no-interviews, no-talk" blacklist before that).
If you want a good example of how a discussion with a dev looks like, check out Sloot's interview with Ion - the part about GCD changes. That's the kind of feedback they're looking for.