The ones I worry about most at the moment because of the style of singing they do are Taehyun and Jooyeon, with Jungsu also there. With Xdinary Heroes specifically, I worry they aren’t getting enough good training at the company. We know Seungmin skz ended up hiring his own vocal coach outside the agency as it is, and rock singing is different from pop singing! I’m far from an expert on this stuff though, it’s just based on what I’m hearing when they sing live.