The Dinklebot voice is more suited for the Ghost persona. The Northdroid voice does not carry the same Ghost advisor tone. I'm sure Northdroid comes from a fine individual and has a great resume, but not for this Ghost role. I think Bungie was in a difficult position to continue the voice of Ghost as the same from launch story into the TTK story. Continue to use Dinklebot but then change to Northdroid in TTK would have been a disjointed experience for new TTK players. So Northdroid repeated all the lines and erased Dinklebot forever. I miss Dinklebot. We should have a kiosk for Dinklebot's voice.