This may be extremely ambitious, but I'm keen to kick off development around the creation of a map namespace during the Zurich hackathon.
The goal would be to setup an editable map namespace that could be used for a variety of things, one of which would be adding a map view to the Special:Nearby page provided via the mobile site. The goal is a proof of concept not necessarily anything production ready (but that would be great if we could get to that point!)
Please let me know if you would also be interested on hacking such a thing - https://www.mediawiki.org/wiki/Z%C3%BCrich_Hackathon_2014/Geo_Namespace - or if doing so would be a terrible idea (but if you have to go down that route please provide constructive reasoning on what would be a less terrible idea)
Excited to hack on cool things in Zurich!