Love to see people using this jam as an opportunity to make their first stuff!
To answer my own question, I had an idea when thinking about 36th Way to make a game with a similar 3d6 resolution method (roll each die and add them, advantage/disadvantage add dice and you pick the highest/lowest 3 to use) but without any other addition/subtraction or math scaling. That idea, combined with something from a draft from years ago where I used the highest, middle, or lowest die of 3d6 in addition to the total to get multiple results for things, is brewing into a proper system. I wrote up a quick game with ideas to test it out, and right now I’m trying to write a more generic framework for that game with as many kinds of play, sub-systems, and variations as I can think of to include for easy dropping into your own games.
(I’m also sketching out the outlines of 3 flavors of game with it in the text - heroic fantasy, gritty sci-fi, political mecha - as worked examples in the hopes that it doesn’t read like a technical manual.)