It really does kind of suck that Los Angeles was already in Fallout. Imagine all the popular landmarks and places that could be in there in the new game format. Like the Hollywood Bowl being some kind of small town like Megaton, the Dodger's Stadium being taken over for some kind of homebase for raiders or something, the player being able to climb up to the Hollywood sign to get a good sniping position on some attacking Super Mutants, etc. It could have some sort of cinema/movie theme to it, which would fit pretty well with the 50s theme that Fallout already has. I would totally play that