Robert wrote:
> What we want, if anything, is a way to prevent std::elide from being deduced from a constructor call as a class template argument via CTAD, but there are library solutions to that problem.

Ok, perhaps you could share with us what that solution is.
Or better yet, you might want to write that paper yourself, since certainly the OP will not do this for you, and they have a track record of posting “ideas” that never get anywhere.