And it has additional problems like finding technical staff at a reasonable price there and having to relocate people from all over the world, when some development centers could be open at other locations too, which might be cheaper:
http://meta.wikimedia.org/wiki/Talk:Wikimedia_budget#Development_centers_in_...
Why is this not done? Wikidata is being developed that way, so it is possible. Is there anything against repeating the experience?
I am thinking the same thing every time I read that "it is hard to find programmers in San Francisco for the offered salary" (a recurring statement over the years). We are a global movement with global projects and global goals. Secondly, in the IT industry having several locations on a global scale is more than common. Thridly, in the software engineering field employees are paid "good" salaries even in poor countries (albeit comparatively cheaper than in the Silicon Valley). Therefore we wouldn't have to worry about being accused of abusing underpaid labour.
Dimi