why the dev hasn't respond

[StrejdaTom]

There is more negative feedback than positive feedback but IMO it should be as that. We had some "thanks for Heavensward" topics and I am glad for them, but devs need negative feedback more to be able to improve the game.

Even Yoshi said that he is glad for negative feedback because it lets them improve the game (please don't ask me for source, it was in an interview quite some time ago) but they also treasure the positive feedback ofcourse.

There are some meaningless rant threads (which I love when I have salty mood), but there are nice negative feedback threads with awesome points and suggestions.
Actually I am looking at different problem in these forums, many people have problem accepting constructive negative feedback or don't like any opinions that are against their idea of game and usually attack the OP a lot.

TL, DR: There definitely are good constructive negative feedback threads, don't blame only people for low responsivity of devs, they are to blame too. It is just easier for them to respond to suggestions for campfire minion.