Despite the implication that you'd use it to deprive other factions of dust, it's really more of a FIDS improvement than an offensive strategy for the Harmony. Harmony shouldn't have to rush military to get the one thing that makes them actually playable, especially when their population growth is cut in half while building ships, making early military nearly impossible. Likewise, it's too damn expensive, and leaves the harmony without compensation for their inability to use dust for most of the game. Put it as a ring 2 tech on Resource Leverage instead, so it can be taken at the beginning.