So far we failed to get those RFCs implemented on the major stacks for WiFi or Ethernet.
There’s a new thread at IETF 6MAN just now on adopting just the draft above - not even the solution. It is facing the same old opposition from the same few and a lot of silence.
Somehow the group can spend years of heated discussions figuring out if you can insert a header or how you can build a 64 bits IID, but looking at a fundamental architecture issue like the one you point out does not raise much interest.
My suggestion is still to fix IPv6 as opposed to drop it, because I don’t see that we have another bullet to fire after that one. For that particular issue of fixing ND, new comments
and support at the 6MAN on the draft above may help.
All the best;
Pascal