I often hear the "SE mainly cares about the JP audience/playerbase" in terms of design direction and balancing.

Which leads to my question, how do you find what JP players care about or have issues with if you are not Japanese?

Are there any twitters/players/sites that track dominant JP player opinions on subjects?

Like for example how has the JP playerbase reacted to the removal of kaiten for Samurai? How do they feel about casual solo content? etc