That would imply there was a peaceful solution.
You becoming the director means jack shit as the various departments are self-functioning, and can basically veto what you say if it goes against the ideals of The Institute. You aren't going to be able to go "hey guys, lets stop all the kidnappings, and synth replacements, and treating all the synths like slaves" and then have everyone in The Institute do it. You becoming The Director isn't going to bring about any large scale change like that, because that's not how these sort of organizations work.
Its entirely naive to expect something as unrealistic as that to happen, and everyone in the Railroad knows that, so they don't waste their time on something they know is impossible.