I've read a few responses, seems there is an issue with the New Republic acting like a bad guy?
For preventing the always war with the Independents:
- There is a war trigger for the New Republic along the Corellian Trade Spine somewhere south of Hosnian Prime, removing that trigger would prevent the Republic from always declaring war on the Independents.
- Additionally, there are war triggers around Cloud City [Bespin] area (the southern Galactic Empire starting holdings), which sometimes are triggered by the New Republic (these too need to be removed).
Even with the above done, the New Republic will still attack others. What you can do as others have suggested reduce the attack on units (The Republic will attack but with little to no exchange in planets, and they will seek peace soon enough). Cutting the attack on New Republic ships (
only the ships) by 2 should be sufficient (at that level very few ships will have +15 attack), to compensate for this reduction in attack, you may want to increase either ship defense or hit points.
With that said, I have reasons for liking the republic as is:
My rational for the war triggers (Independents vs New Republic) is there is no mechanism for planets to join the New Republic, thus they are preventing Imperial factions from conquering those places. Also, in this time period there were numerous wars the republic was involved in. All of which of course were justified defensive wars which at times resulted in "liberating" territory occupied by others. I think the New Republic is trying its best, but with competing factions within and a shaky foundation, it is completely reasonable for them to engage in offensive wars (lets not forget there are numerous Imperial factions still around, plus the New Republic is not even 10 years old - likely there are Senators who have jingoistic attitudes).
Further, (assuming you are playing as the Galactic Empire) my goal was to ensure you couldn't take independents and then have an easy victory against the republic. You will (with the original design), likely get into a cold war scenario where both sides are building arms, in addition likely you will need to cannibalize other Imperial Remnants.