Don't do it.I was thinking of replaying fallout 4,
Nothing except a completely new world (think Enderal/Nehrim) could change how uninteresting everything in Fallout 4 is.
I tried once vanilla and once modded to hell and back and there is just nothing there to keep the interest up past the first 12 hours or so.
I really think F4's gameplay is actually better than F3 and New Vegas, (less terrible RPG, more semi-competent action game) but that Theme Park world is just soulless.
It's rare that you can genuinely say a game would have a more interesting and coherent world if everything was procedurally generated. Even bad procgen allows you to imagine a coherent world and connecting the dots. F4's world was created to destroy all illusion of connected parts.