Many wikipedia articles use coordinate templates that link to https://tools.wmflabs.org/geohack/geohack.php. E.g. [[ https://en.wikipedia.org/wiki/San_Francisco | San Francisco ]]'s two displays of coordinates link to [[ https://tools.wmflabs.org/geohack/geohack.php?pagename=San_Francisco¶ms=37_47_N_122_25_W_type:city%28852469%29_region:US-CA | this ]]. geohack in turn displays links to view the coordinates' location in dozens of mapping services, //not including// maps.wikimedia.org. People who click on a coordinate will conclude from the bold green Wikimapia link that "Wikimapia" is Wikimedia's mapping service.
I understand that the goal for maps.wikimedia.org is to one day be so good that clicking coordinates directly load maps.wikimedia.org, but for now we should add maps.wikimedia.org to GeoHack.
It appears that GeoHack loads a template for its laundry list of mapping services from https://en.wikipedia.org/wiki/Template:GeoTemplate , so someone merely needs to be bold and add links of the form:
[//maps.wikimedia.org/#/{osmzoom}/{latdegdec}/{londegdec} Wikimedia's super-awesome OSM-based map service]
to this template (and on other wikis). I made the sort of change required in [[
https://en.wikipedia.org/w/index.php?title=Template%3AGeoTemplate%2Fsandbox&action=historysubmit&type=revision&diff=682346342&oldid=651901898 | this diff to Template:GeoTemplate/sandbox ]], but I don't know how to test the sandbox template on tools.wmflabs.org/geohack. It seems some quick live testing of an edit to the actual template is all that's needed.