User blog comment:Blappp/AoE II Tech Tree revamp/@comment-405747-20170208023216

Wow, this is very innovative. But I'm creating a bunch of civilization ideas that involve certain units and techs that would be disabled (for example, I have the Tibetan civilization where they don't get Long Swordsman, and the Castle Age infantry armor upgrade), is it possible to create a hypothetical disabled unit/tech icons such as disabled Trebuchets or even disabled Battering Rams?