Just a fan theory.
If Gipsy had killed Knifehead without issue, i.e. Yancy survives and neither the conn-pod nor left arm are severly damaged, do you think the Mark III restoration programme would have still upgraded Gipsy's systems and added the GD6 Chainswords?
Also, would Gipsy have been the Jaeger to hold the Miracle Mile during the Hong Kong incident? Crimson probably would have died anyway but due to the Becket Brothers' kind of reckless and impulsive attitude, maybe they would have got to Otachi and Cherno quick enough to save the Russians?
Then Operation Pitfall would have been a 3 v 3 fight!
Thoughts?