Some Wikpedia entries easily gather around themselves several people that in a relatively short time and without much debate produce quite acceptable Wikipedia
articles.
My proposition is to start a new page with a link from the Homepage that would
organize teams for work on some subjects.
I don't mean just _one_ article, rather more broad subjects like existentialism,
art nouveau style, or cytology. These issues require some more thought on design and some planning and some cross-sectional discussion.
Some subjects need such collaboration like heart - I might know something about human heart but
vertebrates have differently build heart. I know that but not the details.
Sometimes we need a collaboration across national Wikipedias. Usually national Wikipedias take from the English one but Wikipedians from, for instance, Catalonia can help with entries like
Antonio Gaudi.
--Kpjas