It has spoken to us quite a couple times through visions. After ghual attacked it helped us get the light back. During forsaken it spoke to us once more in the vision of light mission. The speaker said similar things during the red war campaign as he revived visions of light. He stated he would step down from being the speaker once the traveler woke up. The reason that it didn't fight savathuns ritual is because it had to take a neutral position in that manner. As it probably wanted us and the lucent hive to eventually become allies so it really couldn't lean one way or the other. But when we won it went back to the city. The traveler sees the lucent brood eventually becoming a Allies to help fight the witness and its army. Plus savathun already saved the traveler so it didn't want to fight her. As a matter of fact one of the lucent brood in the lucent tales lore book didn't want to kill a downed guardians ghost. The traveler will probably communicate with us more. I belive it understands that guardians sometimes have to use darkness (Stasis, Deepsight, Rhulks Beam) in order to protect humanity. As long as it dosen't corrupt us that is. When rhulk tried to corrupt a ghost the traveler hijacked the ghost and told him to go away in a forceful tone. So yes I still belive that the traveler wants to protect humanity but wants to explore all sources in building an army to protect itself and humanity from the witness.