Huh, I went to check Sky King's Tomb for info on the Caligni and to see who else would be appropriate. I never knew that Drow actually did get a replacement in the form of ayindilar elves, colloqually known as cavern elves.
I don'tunderstand. Perhaps you could elaborate? Neither "ayindilar" or "cavern elves" appear in HighHelm even once. The former doesn't appear on Archives of Nethys either.