If you want to make strong zombie viable make the taunt nondispellable so only aoe works on the ns and it only happens on the first life after the first revive only taunt for one turn after the attack. Then it would make the strong zombie viable as a tank and benefit the entire team giving asaj and everyone else the all clear to try and stack up her offense. I think that would probably work pretty well and add the gear value everyone is looking for and also keep ns viable in all areas of the game without having to choose one or the other weak or strong.