Rumors make it sound like a sort of Borderlands/Conan Exiles hybrid with actual/optional questlines and a story. I actually enjoyed fucking with the settlements and settlers in FO4, especially in Nuka World when I could go back and stomp on them. Didn't enjoy the voiced dialogue and the rigidly linear main quest. If I can go knock a hole in another player's vault door, then set it and them on fire with some kind of flame cannon, I'm down with it.