Stuff I didn't consider AT ALL.
Wow. You my friend, have seriously helped me out. I thank you profusely.
Buildings:
-I'll raise the price of the Production bulidngs to... how does 200 sound?
-I'll fix that research stuff, but remember, the research for armor in starcraft was in the engineering bay, and stimpacks were at the academy. So, I'm just putting that out there.
-As for the gate, I'll move the gate guard to the Scarlet fort and the Shikigami to the School then. Sorry, I should have made it clear that the Cavalry units fly and only the cavalry units, with the exceptions of certain support units.
Units:
-I like your 2.5 second invulnerability thing, I'll change it so it does that and raise the MP cost.
-I actually thought of this, as you saw the Moriya faction has satori, so they can detect cloaked maids. But the Hijiri Faction, who has the most to lose (Cheap, weak units, think zerg rush tactics) have easy-to-produce detectors, Dowsers (think Nazrin). So, the cloaking is only practical for scouting unless you can take care of those first. To be honest, I'd be more worried about the Moriya Cavalry, what with all of their cavalry being capable of cloaking.
-Hidden history would last... I wanna say 2 minutes? Long enough to fool a scout, but not long enough for a thorough invasion force.
-I never really play Protoss, so remind me, how many Interceptors did carriers hold? I'll just set it to that. As for independent dolls and devils, yes, they take up unit cap.
-Meet you half-way, increase cap and regen, PLUS the cap stays up for 30 seconds after leaving range.