I applaud this initiative, though I wasn't a wiki promoter 
Some points I want to remark:
- Translating the wiki in different languages seems a big effort and quite out of scope. The Admin's manual has an higher priority for translations, in my opinion.
- In the future, I'd like to see development and community rules written on the main web site (www.nethserver.org), at least as a summary or links to the most authoritative place (docs.nethserver.org).
- A "Doc Team" is required, as other teams in our community, to coordinate the contributions to the wiki, the manuals and, tomorrow, to the web site. It could be constituted by the actual Howto team, with a broader goal.