Major and minor races build starbases near my planets to harvest resources, I am fine with this.

But with the current system for the limitation of starbase construction, based on a  hexes distance between starbase, I cannot build economic starbases near my planets due to this limitation.

It would be more convenient to use a system based on the number of overlapping effect areas of starbases (the number of layers), anywhere on the map, so the other civilizations can build their mining starbases, and the player can build his economic starbases at the same time.

Your opinion about that?

Also, a system based on "effect areas of starbases overlapping" (layers) is much more flexible for modding (ex: make more "powerful" starbases and limit them to 1 or 2 starbases per planet).