When placing (and upgrading) units you can't tell what special abilities it has acquired. If you have two units of the same type and level, and you've given them different specials, you just have to take a guess. Even if you do upgrade them unequally just to keep them apart it's a real hassle. Sometimes you want to use different specials in your strategies. Get it wrong and it's "forfeit and load". Otherwise good game :)
 "Yitien"){kind=icon}
 "Eredan iTCG"){kind=icon}
 "Insectonator"){kind=icon}
 "Chroma Wars"){kind=icon}