The fallout bos version is exactly what I imagined Vault Dweller would do after the ending. Rhombus also mentions vault dweller could become a Paladin. I also thought the 3 raider gangs would have a war to settle at mariposa base and vault 15. And maybe they were trying to tunnel their into...
The sequence where time runs out and player (must)feels irresponsible to the grief caused on his village is much more interesting anyway. It is also more original in placing (another)geck in final quest.