One thing srsly annoying me is how the Diplomacy is set up between factions with Rebellion.
Explain to me, for example, why a TEC Loyalist cares if the Advent they are facing is Loyalist or Rebel? If anything, they should be at a 0.0 factions relations bonus to the Advent Rebels (who do not specifically state their goal is the revenge of the TEC) and compared to the Advent Loyalists they (the tec loyalist) should have a -5/10
And both the TEC rebels and Vasari Loyalists should have negative faction bonuses; the TEC rebels for being xenophobic, so getting a treaty with the Advent/Vasari is out of the q. For that matter, they should lose the ability to research the tech removing the racial penalty.
And the Vasari Loyalists for disregarding the other factions and taking what they need.
As such are tech diplomatic outcasts, they should gain a +10 faction bonus to their own factions.
Stuff like this to make the game make SENSE.
Like the Vasari Rebels- advantage in Diplomacy with all but the dipomatic outcasts, since they are trying to 'save' them.
Anyway, just my two cents.