
The kanji idiom corner is interesting from the little I can understand, but again, I only ever watch them if my oshis are on it.
I would be interested in seeing some sort of "challenge" corner. Either a girl gives herself a challenge (overcoming a fear, doing something she hasn't done, etc) or a girl gives another member a challenge ("I'd like to see you try this thing!").
Of course, I'm grateful H!S exists at all, and it's a lot more interesting than what it was at first and they're constantly improving it, so I feel bad for complaining, but I'd like them to try more corners when possible. I understand with girls constantly on tour it's not the easiest thing, though.