But still it may be the best route to take for a Ghoul-hating Courier. I do wonder what'll happen to Jacobstown if the Legion rises to power. The ending slides only say something about whether or not a cure for the schizofrenia is found.
Since it can prove to be successful town with Bighorner farming as long as they don't put up resistance I see no reason for Legion to slaughter them all.
Hell, if Legion is allowed to take control of the town the mutants could still live as citizens under their protection, they would also be given safe trade with nearby Legion areas mainly Vegas itself. /Gabriel:Speculation
But yeah, there should have been an ending slider for Jacobstown for all endings. (House, Oliver, Caesar, Yes Man, Lanius.)
Right now Jacobstown feels very isolated and disconnected from the rest of the game.