A while ago, people were dubbing New Vegas as a mere expansion of Fallout 3 with similar gameplay, graphics etc and little additions which I felt was not right since New Vegas had a lot to it (though the DLCs certainly ended aforesaid dubbing with the additional content). Nowadays, I feel that description fits FO4 more since there's barely any improvements from New Vegas (aside from id's contributions to the guns) nor is there any content worthy of recollection unlike New Vegas (even a side-quest like Someone to Watch Over Me sticks out to me more than anything from FO4).