Love that trained units can have their unit count upgraded as new techs become available. However, there is a problem: it only costs 30 gold per member. What if you are upgrading a super unit decked out in Champion's gear? Only 30 gold!

So I can pay the crystal/metal cost for a super unit of 3 members, then pay just 90 gold to upgrade them to a company of 6. And I don't have to pay any crystal or metal!

Adding resource cost to the upgrade cost would fix this.

SIDE NOTE: Why can't we upgrade champion's equipment the same way? I like paying gold for equipment as an option, but why not let the blacksmith make armor for my sovereign if we have the metal? Why require purchase?