While this sounds goo theoretically, it has the problem that it does not cover the very basic aspects of the so-far designed game (ie there should be three races doing different, already defined, things).
Also it does not work with our warfare model, because we certainly will have fortified bases which have a huge impact on the way they must be conquered compared to the open field combat.
But we will proceed like you proposed, we now have the small base which now must be balanced and looked closer on. If we have gained enough experience, we will move on.