This goes beyond just graphical changes, any mechanics that’d you’d love to see get more fleshed out or quests get expanded? Does not have to be realistic!
Based on the caveat in your post about not needing to be realistic
Rebuild them on entirely different tech. They look awful.
If we could get Bethesda to stop treating the setting as a box ticking exercise that'd be good too. Oh and change when Fallout 3 is set to a point in time that makes sense.
Oh and in New Vegas give me the option to not alienate the Brotherhood of Steel for Mr. House. I spent a load of effort getting them on side, I'm not telling them to piss off.
Edit: Agrivar@lemmy.world care to explain why my opinion is deserving of your down vote? Or just to wind me up? Seems a bit of an arsehole move to me.