Reading all these ideas, I can't wait for the month to be over so I can see all these new games.
Personally, I have also been putting together a large and complicated system over the last year, so for this I think I'd rather work up something completely different. A friend sent me a tweet about a game whose attributes are Gumption, Chutzpah, Moxie, Childlike Wonder, the Cut of My Gib, and A Certain Je Ne Sais Quoi. I came up with something goofy on the spot which has been in the back of my head since.
I'm super influenced by Ars Magica and Thousand Year Old Vampire in this moment, so it will probably take notes from those. Very excited to get to work, and to see what everybody else puts together!