@thisismissem @liaizon @laurenshof 2¢: I'm writing my first FEP right now, it's a big one, and all the implementers have been great. Bringing their ideas and goals and perspectives, being polite, constructive and helpful. Might be a reflection of who's there (or who isn't), but hey.
The only hurdle so far is that no one seems to want to write. 
Then again, not having to merge other people's chunks of text into a cohesive document has its upsides.