Do you have any ideas how to get them? As I still believe, for many articles this is a meta issue, meaning that it is likely that only a few people in the world have necessary expertise AND a wish to edit the articles, and they all speak English, but may have random mothertongues (not necessarily German speakers).
You're right, but it's only part of the story. Another side of the coin is: even relatively young PhDs don't like the idea to contribute to the progect which is of the "youth and teenagers for youth and teenagers" type.
Yes, but this is another (albeit related) issue. I do not think we should tie them together for this discussion.
Right, just for the last week I have been involved in a mediation of a conflict in the article which is directly related to my professional activity (meaning I am much more qualified than both sides of the conflict). In the end of the day, I had to give up and quit the mediation. I am an academic and still under 45 (though coming close).
Cheers Yaroslav