This simple PbtA style system is my default for most games. I've used it in the form of Offworlders and World of Dungeons for years. I like your distillation down to literally the essentials as you have it here. Do you plan to add further details or is your intention to keep it in this ultralight "notecard" format?
This is the basis of another game I’m working on, actually, that started as World of Ultraviolet Grasslands but is evolving somewhat. I wrote this version explicitly for the Pleasure Not Business Card Jam.