First of all will all maps have the same units? If so I suggest making the good side and evil side have different units (that have the same stats of course).
I don't see why both sides would have the same units, not much else I can say about this.
Also I find it weird that the towers for the evil side are called towers of light. Light doesn't fit the evilness
. This also goes for the "Glorious" Stronghold.. The name could be better for the evil side but the stronghold itself should be different. Not just darker in color ^.^