I play, for the most part, strictly a healer, I rarely do any DD. although when I do find those few moments to do dmg im usually debuffing. so dont notice the side affects of defender. on healing, however, defender doesnt seem to lessen the heals much. with defender on i think it takes away about 50 hp from my heals. featherfoot, although I havent really tried to test it, will regen mp once you evade an attack. thats the way the ability reads anyways, lol. rampart, tempered will and sentinel, are pretty much my oh shit buttons. doing the NM in U'Ghamaro Mines, those abilities saved my butt since there are like 20 mobs accompanied. when you just do an aoe burn healers pull alot of aggro since most arent "really" trying to keep hate. when you do 1 curagaII everyone instantly turns towards you, so I pop my (literally its labeled) oh shit button (sentinel, tempered will ii, rampart II) and i can survive the onslaught. after I pop that button since alot of the mitigating abilities do not stack persay I wait for for some abilities to drop and I hit featherfoot... its the only way I found that I can survive some of these clusterFu$% moments, lol