Kana was actually on my top 5 before all the negative news about her in Paris starting coming through. The thing with non front girls is, when you screw up once there's not much outlet for you to make up for it. If she had half the jobs Acchan gets probably all would be forgotten by now.
^Regarding those LIP photos, it seems that Kana has a darker skin tone compared to the rest of her team K members. A tan maybe? On a beach? Outside Japan? Another PB???!!!