@fudgietroll
"....Sloane has shown no real tendency to stomp out anyone for "outshining" her, in fact she tends to be so hands off in that regard that she almost avoids fighting the Collective until it's too late..."
This is likely due to her not believing they are outshining her. But more importantly, in the context I am using it, it only would apply to allies and or those in her employ. Her being hands off only supports the idea that she believes she is above all and thus doesn't need to get her hands dirty. She does give me the impression based on what she does in the game as well as how she talks, that should you seem to outshine her or be an authority on Kadara, she will betray you/the Initiative... not to mention she already betrayed the Initiative once.
--------
"....She is still fighting the war on the Kett, and our first meeting with her is actually very similar to meeting Evfra...."
Similar, except Evfra does show more respect and decency towards you. He even empathizes with you from the beginning.
-------
"....Interesting, using the problem with authority argument ...."
The fake coughing was too distracting for me to understand what you were trying to say in regards to this but yes, she has a problem with authority and prefers to instead be a ruler. She literally has a throne, has a history of defying authority, and has already turned on the Initiative once.
There is much to suggest that the real reason she left Nexus wasn't because she cared about people but she saw it as a means to become the ruler of another group. Almost a "better to rule in Hell than serve in Heaven" kind of mentality.
So based on the above as well as other things stated, not just by me, I am of the opinion that she is more likely to betray you than someone with Reyes' personality type. I am not saying I am right nor am I saying that it is illogical to believe otherwise. I am just pointing out logical reasons to be of a different mindset.