Alright so im looking at all the factions right now from the view of the TEC-Rebels. Now faction relationships are supposed to be effected by what the factions believe, etc, etc.
[All of the information I am about to display is when I am not allied with said factions].
But what it seems to me is that its more like rebel vs loyalist. Right now I have -5.0 relationship with my TEC-Loyalist counterpart. Which is unusual because all the TEC loyalist want to do is fortify and do nothing, not necessarily stop the rebels from doing there job. I have -10 against Advent Loyalist, which makes sense as they are genocidal maniacs, however -10 is kind of a lot, but it DOES make sense. I have -0.90 against the Advent-Rebels which makes sense a little bit Advent who are not genocidal towards your people and are willing to work in cooperation. I have -5.00 against Vasari Loyalist, not strange but it should be around 10 like the Advent Loyalist for consistency I mean they just want to steal and destroy all your planets. And the Vasari rebels have a 0.00 relationship which makes sense because even xenophobic rebels understand its better to put aside fear(Keep in mind xenophobia means fear not hatred for) for a better cause.
I just find that the Faction modifiers are a bit extreme or to little of an extreme. I dont see why TEC-R hates TEC-L.