Splash V2 (topic feed)

Working on a redesign of Splash (splash.io). This is the feed view for any topic, in this case 'Street Art.' The grey menu appears when the + is tapped, and allows options to add your own photo, ask for a friend to contribute, or to ask a stranger (which becomes available in the app once you hit certain benchmarks of participation). The buttons at the bottom left allows you to filter content by time, popularity, and your friends. The eliipsis at the bottom right allows you to see additional information about the community (users who have posted, locations involved, and other stats). Comments for each photo are visible overlaying the photo when you tap the comment button, or swipe to the right.

Any constructive criticism relating to any piece of this design? Thanks!