As much as I wish this wasn't the case, what MrHappy said isn't completely untrue. As far as I know, this forum - being the official one - would be the most likely place that any feedback from the community would be taken into consideration by the devs. Now I don't know about JP side, but despite this being the place to go, it feels like the devs very much ignore what goes on here judging by their outgoing communication. Or they say "we hear you, but we're not going to do that," in the live letter. Or it is a passing remark in a Q&A: "Healers don't like their rotation? Hmm. I think I do remember hearing something along those lines before... Anyways." Because of this lack of an outlet of any consequence, the threshold of how much a person must want to voice their feedback before they actually do is much higher.

OP, I really appreciate and support the effort put in to push for feedback to heard. I don't know if it's a language barrier getting in the way, or a culture difference, or a prioritization of communities, but we who want change have to temper our expectations of Square Enix.