The Dark Interval mod for Half Life 2 aims to restore various original locations, characters and plot points that didn’t make it to the retail version.
https://www.dsogaming.com/news/standalone-mod-half-life-2-restores-content-cut/
Thanks bluesnews.com
https://www.bluesnews.com/s/184859/evening-patches
I did give Dark Interval a look a while ago. Pretty awesome visual reference for HL2 beta things as well as playing decently on the levels with gameplay. It really needs voice acting and choreography, though.
Could do with a lot more playtesting before release.