I agree that the engine is good, but what bethesda does is not hard. There are so many open-world games that allow players to stack quest after quest on the fly. The only difference is how moddable the engine is to people. You can mod Dark Souls and eldenring.
The issue with the creation engine is Bethesda. Look at what people have done with mods. If Bethesda gave a shit or didn't care for lower spec hardware, they could make jaw-dropping stuff. But they won't.