The chimeran armor Wasn't set back right, the Physical Power of it is WAY OFF, it had a + High Physical Power and a High Countdown....So What the Hell???
As others have mentioned, Chimeran armor was redundant--not to mention inferior because of the high cooldown reduction loss-- because Artemis already had 15% PD & only -1 HP at rank 3.
Now Chimeran fills a niche that was sorely lacking for any allegiance other than Zeus, which is high elemental attack. It's better this way. Please, don't change it.