Look, i can see why you can't spam single target Heals on Overlords since they're quite tanky while also providing CP Heals.
Can't Ress Overlords? - ugh, a bit weird since it punishes active play where you run risk of dying, but heck, you propably got your reasons.
But that even Cleanse is forbidden to be used on other Support classes is just plain ridiculous in my Opinion. Pretty much every 2nd Debuff in this Game is close to a Death Sentence when it lands, and since - guess what - you can't get ressed either, there's only to town left for you, making party play really awkward unless you got an SE in party (they CAN ress OL for some reason?)