All good points.
Couple of my own: I find it strange that Responses are listed with Stories. I’d like tabs so you can see one or the other, or both. Also, Recommending a Response strikes me as strange from a UX perspective. Rarely are we really recommending that others read it — it seems more akin to a FB/Twitter “like” than a call for followers to read what someone said in response to a story they most likely haven’t read.