I think those are the only ones we know about doesn't necessarily mean that's all of them. And I seem to recall one of the newspaper loading screens for fo3 showing europ with a like launch radius graphic over France or something... or was that something from a fan work?
Anywhere the thing is The bombs aren't important. Yes they've become a primary symbol of the series but in the end (to me at least) what makes fallout Fallout is the struggles to rebuild. We have seen it on soo many different scales, the lone wanderer rebuilding their life after its flipped upside down by James leaving, the chosen one rebuilding after arroyo is taken, the vault dweller adapting ti life outside the vault and then going on to (in most canons) to be the guardian of the vault and founding arroyo.
I honestly feel like 4 and 76 kinda missed the mark, 4 tried to do something with the sole survivor but they went too M. Night on it I think. And 76... it's an mmo with fallout like aesthetics to me (I don't mean this as rude as it sounds).
Your absolutely correct to say it's a work scope issue with production. But I feel like it doesn't have to be, be it AI automation or even getting a 2nd location company involved I think it would pay off in the end both critically and financially. It's just getting to the point where the companys will do it. That's the real challenge right now. I think at least.