complicated, but the gist really was that our spy guys were just done with the experiment and so just needed to kill off everybody involved, including the super-assassins they had created?
"Hey, our program works, but these two doctors once had drinks together."
"Well, that sucks. Guess we now kill everybody that was a part of it."
And let's not forget that LARX>Outcome>Blackbriar>Treadstone, seeing as how each one is an evolution on the prior program, and yet Jason Bourne, a Treadstone prodigy, is still the greatest of them all.
Anyway, Legacy had a lame ending even if it's cool for me to watch all the Manila scenes and hear the old mission language.