"But I do think more needs to be done to make unit composition matter. Let us know what sort of unit differentiation you'd like to see that isn't already in the game."
I re-posted this, since no one seemed to respond to it in its current thread but might be important to founders who have some thoughts on this since it is a tremendous opportunity for us as founders to influence and shape one of the most bread and butter staples of this game.
Two quick points I would like to suggest, are: 1) the specific buffs for each unit add slowly for the meta-unit...until very close to capacity, then they increase once a unit cap for the meta-unit is reached, assuming there is such a cap. 2) the behavior of the units themselves will differ greatly on how many of there own kind are in the meta-unit along with what other units are buffing them. I think this last suggestion, was actually promoted by the devs before the game was in alpha.