I’m on the program committee for the 20th Networked Knowledge Organization Systems (NKOS) Workshop (
https://nkos-eu.github.io/2022/call-for-papers.html), which might be a good place to present work-in-progress on a revised LPF. A gazetteer is a networked knowledge organization system, as are most of projects being worked on by the people on this list. Many of the people who might attend the NKOS workshop would probably be interested in learning about LPF and related projects.
The submission deadline is Monday 4th April 2022, and the workshop itself (part of the Joint Conference on Digital Libraries) will be held online Thursday 23rd / Friday 24th June 2022.
More info on NKOS here:
https://nkos.slis.kent.edu
https://hypermedia.research.southwales.ac.uk/kos/nkos/
Cheers,
Ryan