I submitted the paper regarding this proposal, which can be read here:
https://isocpp.org/files/papers/P4174R0.pdf

I submitted it in time for the June 8th through 13th meetings in Brno, the
last concern I have is that I can't go to Brno in person, and I also don't
know anyone that can go in my place, while also understanding the concept
of this proposal and its flaws.

However, if someone on the mailing list is familiar with the core concept
of the paper, is able to travel to Brno and attend the meeting, and could
possibly have more questions about the proposal, then please contact me.