FYI:
Not that they actually enforce this any more, but you might want to edit your subject line, especially since you don’t actually identify the subject itself and simply ask for Blizzard to read it and respond.
To the actual topic, while I don’t want Blizzard to actually waste any time thinking about what happens after Classic is a resounding success (there will be plenty of time for that starting at least a year after launch), a stickied Q&A post at the top of this forum with a list of questions they are working on answering, some with answers and some (maybe most) with a “we don’t know yet, but will answer this soon™” or a “we don’t know yet, we probably won’t consider this idea until well after Classic launches and we see how that goes” or even just a “TBD” would put the question on their radar.
Just a list of questions, mostly unanswered, goes a long way to showing us not only that they are listening but also the kinds of questions they deem relevant to their work and what makes the cut of “do we include this question in a blue post?” gives us a ton of information that this silence does not give us.