Some people were looking for less pozzed mod hosting sites than places like Nexus Mods. I came across this place:
I haven't gone through everything there but it does have, for example, "Hogwarts Legacy, Historically accurate 1800's Hogwarts," "WoW Wrath Classic Gender Icons," and FO4 Grounded Commonwealth.
If and when Starfield starts getting modded I am sure you can imagine what it will host.
I would argue that even Godot 4 is more feature rich than a lot of these older engines and definitely more stable and fit for purpose when it comes to running on modern PCs and that engine is open source, this is why I advocate hard.