When going through and selecting missions like "Evaluate Alien Tactical Bridge Officer application" or "Evaluate Andorian Science Officer Application," the massive bias is to Disaster. For example, Putting a purple tac officer interviewing the Alien Bridge Officer candidate yielded:
Even if we accept this as possible, the Andorian Science Officer -- an actual Starfleet Officer -- yielded a Disaster of 62% with a green interviewer with three out of the four positive traits assigned to discuss it.
I can see there being a steep chance for failure, but disaster? This seems like it must be a bug. I reported it as bug #19,242.
If this is going to be the standard then there needs to be better odds of getting a blue Doff. Right now, the majority will be white and the result will be continuous disasters when doing blue Doff missions.