Please add a new "מפה" namespace for hewikivoyage.
Yes. We have decided (after we made a local discussion) to add a new maps' namespace. We prefer to create a new namespace instead of creating a lot of maps templates on the templates' namespace.
I'll just further add that we believe this is necessary because we are now importing + creating boundary and track data to the majority of the Hebvoy articles which have dynamic maps (read more about this feature at http://en.wikivoyage.org/wiki/Wikivoyage:How_to_use_dynamic_maps#Adding_boundaries_and_tracks). What this means in practice is that sooner or later most of the articles in the Hebvoy main space that include dynamic maps would have significant amounts of data added to them (many of the mapmasks consist of around 20,000 - 30,000 bytes of data) that consists mainly many many numbers (or coordinates, to be more exact). We use the software JOSM to create this data.
For example, the recent mapmask I added to the Hebvoy Rio de Janeiro article consisted of 33,357 bytes of data - http://he.wikivoyage.org/w/index.php?title=%D7%A8%D7%99%D7%95_%D7%93%D7%94_%D7%96%27%D7%A0%D7%99%D7%99%D7%A8%D7%95&type=revision&diff=143078&oldid=143077
Since we prefer not to "flood" the Hebvoy main space with significant amounts of data from this type, and since we prefer not to "flood" the Hebvoy template space with non-templates, our preferred option is to have all of the Hebvoy dynamic maps data stored in the new separate space "מפה:" (which means in Hebrew "map:").