By request, I changed my geohack tool, which is used by many wikipedias to provide a list of map and data resources for given GPS coordinates, to optionally use localized templates.
For that purpose, I've moved the en template to [[Template:GeoTemplate]]. For localization (say, "fr"), you have to 1. copy the text of [[en:Template:GeoTemplate]] to [[fr:Template:GeoTemplate]] 2. edit [[fr:Template:GeoTemplate]] to the local language 3. call geohack with the additional parameter "language=fr" (URL generation is usually done by templates, so a few fixes on your wikipedia should do)
I still say that Map Sources/GeoHack should become part of the default MediaWiki installation for wikipedias via extension. Using the toolserver for this was a quick hack (thus the name) after the original server went offline. It HTTP-GETs the [[Template:GeoTemplate]] for /every single request/, which is bad for both toolserver and wikipedia servers and could be solved internally much more elegantly.
Magnus