Hands down the DPS loss hurts but not enough "Defense" is made up for this offense loss. A Defense Prestige for a Chanter should make Power Regen much easier. The 15% Passive CB is great, arguably 25% would be worth the personal sacrifice of DPS for Group-DPS. The big issue is .3% Power Regen/Tick simply doesn't counter Drain Fights or make up for Chromatic's own Regen. It really should be 1 percent every tick with max AA on it. I also have yet to really need Illusory Platemail, so either the fights don't require it or it's not worthwhile. I almost would rather it be more of an emergency-save (long CD but saves your bacon). I'm in a raid atm so not as in-depth as my usual comments but I feel that is partly why no Illusionist really uses Energizing Aura.