First of all they will Inprove the Graphics In Fallout 4 all FNV is a Follow up to FO3 its NOT a Sequel.Its only mean't to provide some new content tweak out some old things and follow up on the West Coast Story of Fallout.
I don't think the graphics are that bad then again i play my games on a pc so i can crank things up to look better than on a console, but its all person opinion in the end for example when WoW was released it was the first and to date only game i hated the graphics of so much i decided i'd never play it not even without a monthly fee and its the biggest game in the world.
If they did make it with a new and better graphics engine this game wouldn't even come out for another 3 years, be grateful that we are getting another Fallout so soon after Fallout 3.
I don't think the graphics are that bad then again i play my games on a pc so i can crank things up to look better than on a console, but its all person opinion in the end for example when WoW was released it was the first and to date only game i hated the graphics of so much i decided i'd never play it not even without a monthly fee and its the biggest game in the world.