the thing about the vaults, they were nt in a set order 101-102-103 and etc etc........they could be placed anywhere, as for not including them in future games do to the expirments alredy being done and the borness, only a handful or so of the numbered vaults actully had expirments list from FO1/2.......much like they did with VAULT101 it was not known what it was until bethesda created it much like they did with all the rest, except I believe 106 which was given the one with the psycho-halunics, but was not given a loction so they used it......FO with out any vaults would be boring in my opinion,granted I want more varies and bigger actual vaults,alot of them are massively small to say they could hold 1-2000 people is abserd considering hos big they were shown in the game.
My pet peeve was down in 101 there was a door listed as inaccisable,that in truth would have lead to larger parts of the vault but were not included...which drives me nuts, don't put a door like that just don't add it seriously.