Hello!
There was a site which used to be a popular tournament ground, both online and offline.
Perhaps anyone could be interested if you left a message there.
https://heroesportal.net/tavern/
Other than that, here is another one (see Library of Enlightenment section). You can leave a thread there.
http://heroescommunity.com/
Finally, there were people in the comments on our Mod Database. You could also contact them personally if you are registered. See comment section to the latest release (v0.8.2) and general comments on the main page.
https://www.moddb.com/mods/h3sw