Definitely. Techi is so far best suited for angst-ridden songs, and therefore fits the overall image of the group the management is trying to envision. Heck, even her solos PARCO and Jibun no Hitsugi are depressing, lol. I'm not saying she won't fit in songs like Futari or Sekai ni, which by the way she delivers it well, it is just that Techi has the tools needed to evoke emotions in Keya's dark-themed songs. To put it simply, she has that X-factor in her. The way she puts her own stamp all over the place is one of the reasons why Keya is successful right now. I may be wrong, but if another girl centers in the next single, I believe a change in overall concept of Keya is needed. She has really big shoes to fill.