Question that bothers me since it has happened every time I have played against the Terrans.
They are the worst Super Diplomats ever and while supposedly neutral they act more evil that even the Korath, Drengi, Yor, Korx or Dread Lords. They refuse to trade unless it is at an outrageous advantage to them, they colonize everything that is even remotely habitable and will demand tribute at about a once every 3 months time frame. The only way they will agree to an alliance is if they are under attack by all the other races or I am of equal or stronger militarly than they are.
They also seem to have some kind of super influence resistance and while they never build influence starbases they seem to have twice to three times the influence range of any other race. I built 4 Influence starbases so close to one of their lesser planets after researching all the way past Xeno Ethics and the planet never flipped and the area of influence did not even change for the terrans and this planet was no where near any of their other planets.
Any answers would be appreciated and here are the stats on the last game this happened in.
Immense Galaxy, All planets/stars/rescources set to random, Normal settings, Number or races set at 4, Random races and intelligence, got the Terrans, Altarians, Drengi, and the Torians. Minor races set to random got the Scottlingas, Carinoids, Snathi, Dark Yor, and the Vegans. I played as the Arcereans with all normal settings for the that race as Super Warriors. End game stats I acheived a Diplomatic Victory but only because the Terrans were at war with everybody else and I do mean everybody including the minor races, expect me. Only one major random event and that was the spies on everybodys planets at about mid game. One diplomatic clue may have been the banning of terror stars at about mid game where everybody except the terrans voted to ban them.
Hope that helps.