It's an Illuuuuusion!

Small idea and adjustment. Let's scrap invisibility out of the Illusion Controller set and put it solely in the Stealth set where it belongs. Both sets are lamer because of the similarity. As a replacement, I propose this for Illusionists: Doppleganger. The illusionist selects a target and activates the power. He then takes on the physical appearance of that target for as long as the toggle is activated. This produces essentially the same effect as invisibility but flavors it specifically towards the set. In addition, I'd make these adjustments. The illusionist can mimic minions and leutenants without incident, but if they mimic bosses or archvillains they run a greater risk of being found out. Essentially, if the disguised hero and his "original" are both within line of sight of villains, each of those villains are aggroed to attack either the hero or the original (with an equal chance of either). Interesting? Flavorful? Yes! And it would add some interesting strategizing to the game.