Any action or inaction in a position of power will always grant you enemies
Fallout New Vegas is loose cannon they have hints and sayings that tie back to fallout1/2 but nothing that really could say what endings and events in fallout2 is canon.
yeah talk to marcus at jacobs town and u find many eastereggs that are compared to fallout 2 , the last enclave dudes (the renegades) man there are so amazing many easter eggs and the story is well planned im looking forward to the ultimate edition in february