Just this once I'll express I'm concerned about the recent reprioritization of the Collaboration team. Workflows (collaboration tool) will be most welcome, but we also need Flow (communication tool). This post should be dedicated to the PM and is dedicated to "whoever is the fill-in, if anyone is".
Polish Wikipedia community has just noticed that Facebook provides better communication/collaboration tools than its wiki, mailing list and other official channels of communication do. "Only in October, on the closed group of Polish Wikipedia on Facebook, 25 posts, 113 comments and many likes appeared. For comparison, on the mailing list, there were 5 threads and 6 comments." -- @Kenraiz (diff)
AFAIK, a similar proportion applies to CEE. No one complains on social media or any offwiki, closed, non-archivable tools. They are used partly instead of wikis and partly by the way of regular use of social media, because they are less diffy, "cody", more default-oriented, intuitive, quick.
I respect the Wikimedia diversity. Maybe some communities don't use social media as much as we do and/or find Flow too un-wait4it-traditional. But in sake of diversity, please don't forget about those who use modern tools and, simultaneously, experience a decline of activity on wiki/mailing lists etc.