Thank you for the heads up. I believe my proposal can be done entirely with C++26 reflections. No need for C++29. Wow. Consider my mind blown.
Well, I guess this is the end of the discussion. C++26 for the win.
Have a nice day everyone!

> C++26 will not be perfect. You might want to watch Herb Sutter‘s recently uploaded talk https://youtu.be/kKbT0Vg3ISw to get some ideas how to implement your ideas with reflection. It will not be perfect. However, your proposal would target C++29 and we‘ll have much better reflection support in C++29. I believe a good library-based solution using C++29 reflection should be possible by then.