But the idea of camouflage sounds as a viable asset to the game. I could imagine having camo painting on your units for example that makes them harder to spot. Lets say a unit sees 200 meter far and spots enemies as soon as they appear, but with camo they have to be 150-100m close to be spotted. Of course opening fire renders camo useless. Strike commanders could utilize this to fight an effective guerilla warfare.
I strongly oppose the stealth ability that was show in the E3 demo though, the idea of "OK now I press this button and my army turns invisible" is rather lame. Having stealth generator as a customizable unit upgrade is fine (with disadvatages such as slower movement while stealthed), but let it be "just" a very effective camo - can approach 100-50 meters close in the above example.