It was eventually abandoned, as you’d expect for such an old game, and it has now been re-created for Sins of a Solar Empire 2. Sacrifice of Angels was a full conversion modification for Homeworld.
This guide rounds up three must-have Sins of a Solar Empire mods. Some of these efforts have been extremely impressive. This has resulted in a large community of people modding the game, either to try and improve it or to convert it to a different mythology. But like many great PC games, it also can be rather easily modded.