>>445993I know you're being cynical but even if you're being cynical the correct answer is "spamming tier 2 units" rather than tier 3s. Tier 3 units also have a base cosmite cost, while tier 1 and 2 units have no base cosmite cost but do take cosmite for modifications. I can't speak for anyone else but I find, when playing Planetfall, that I generally have a pretty good mix of units and tiers in my armies, although that may be less because it's efficient and more because I like armies with lots of different units. I'm sure powergamers could tell you what the optimal cost-to-power unit ratio is.