One of the most professional Jams I've been in, this was a really fun experience and I hope I'm free to do this again next year, the 'polishing' week was quite vague, in my opinion i don't think there should be a polishing week because there will most likely be people confused no matter how in depth the guidance of what is and isn't polish, to avoid confusion I would just either make the jam 2 weeks to keep the 'polishing' week around unofficially to avoid confusion and let people just work on the game as if it was a 2 week jam or just leave it as a 1 week jam.
I really liked the live streams too, this whole thing was great, thanks for hosting it! :)