As a rule, each active participant in the Forum has a so-called "your own horse", i.e. "own" theme of our craft, on which he is an unconditional specialist, the leader of our community, tracks innovations in legislation, publications in the media, etc.
As an example, I want to bring Nail and the topic of "collection services." He gave this direction a new vision, a different understanding and original principles of promotion. Has excellent results in this work ...
Here you can mention Igor - DA "Koraks", Kharkov - IT, new technologies, equipment, etc.
I suggest, in agreement with such colleagues and always with their voluntary consent (good things will not work), to give them the right to maintain the relevant thematic pages of the new site.
The creation of interest groups is not prohibited, that is, when a section (page) of a site is led by a group of specialists, 2-3 people. Perhaps the combination with the duties of the moderator of this topic.