I think this community governance should be extended even a step further. Now we see that activity from localized subforums has brought a BIG boost. This is IMO _the_ way to go to expand the community even further. You do not reach that Dutch or German guy that is just stumbling on Zentyal as a possible solution for his situation. Therefor you need a local community that kan adequately answer questions in his/her own language.
I know I had my doubts when international boards were launched. The biggest problem is the small size of the community. But with the current momentum I think local usergroups can boost the use of Zentyal even more. This does have a great impact on organization of those communities. It also needs input from the international community to make good organized local community possible.
I'm glad this topic will be one of the discussions on the Zentyal Summit and look forward to further developments.