It would be nice if the lead image Wikidata description overlay were tappable/editable.
There are definitely UX considerations which will need to be addressed, but I'd like to take a stab at a quick proof of concept to kick off discussion.
My goal would be to work on this during the Lyon hackathon.
Please see the mobile apps page for the hackathon for more details in general.
Video of fully functional proof of concept on iOS:
https://gerrit.wikimedia.org/r/#/c/215074/ (massively in need of re-base and cleanup as of Feb 11, 2016)