Seems that the galaxy generator is still set to encourage early conflict (so not a bug so much as the values didn't get adjusted from beta 1)
It is for testing purpose right since I understand early conflict is understandable if you want to test out the gameplay without waiting for ages.
But when the game finalized then yeah, I hope it's more spread out or at least optional. I started a 4 Galaxy /40 planets each last night with 5 other AIs, and half of us is not only in the same system but right next to each other. Plus right now the AIs is not very agreesive (even on hard) about expanding, especially to the other system, so if I hammer the planets from them at the start they'll be death for the rest of the game. It makes me thing that right now with this set up I'll be the only one doing the expansion to the other stars.