ought the US figure out a way to do cloud flyng without an Instrument rating and a power plane to keep it current?

Sure. Just ignore the regulations and go for it. If you get busted, you made the call. Unless your aircraft is approved for night flight, or instrument flight and you have the proper clearances, ratings and permission, you are taking your chances with the authorities. My glider is only approved for Day VFR. And that's fine with me. I've flown in clouds, both with and without AHRS, and I simply don't enjoy it. AHRS is nice to have, and I might opt for the LXNav upgrade sometime, but not right now.