Category name
Francais et France
Is this a top-level category or a subcategory?
subcategory, in French
Description of its purpose and which open mapping groups it will serve
French people usually have a very bad level in English. They won’t try to translate for read, they won’t ask any question (in English, because they won’t understand the answer)… Therefore they won’t participate 
Why is this new category needed instead of being hosted as part of the existing ones?
see what I wrote just before…
Is this a new space or does it already exist on other platforms? Where?
a new space, for helping French contributors.
No help here in French, I could translate some stuffs from EN to FR.
Current volume of messages on the former platforms, if any (per week/per month)
I don’t know. But I saw there was very few French on here. Most are English native speakers, or German (as usually on the web)
Is there a transition plan for the old platform to this new one? (please link or describe)
(Optional) A link or list of the category specific guidelines
https://community.openstreetmap.org/faq#aide
List the usernames of the category moderators
For now, me. I’ll search other FR contributors if you think you’ll create that.
I’m using linux (ubuntu), OSM on android, I just installed Kartaview (android) and Gnome maps (but it seems to NOT working, no location + can’t login with my osm account.
I’m ok for editing wiki (main contributor on Ryzom - Free to Play Open-Source MMORPG | Windows, Mac & Linux FR+EN - user Craftjenn), used to markdown.
ok