the only thing whms got going for them is massive aoe heals/over healing, even then sch can aoe just pretty well with eos. single target healing and dps sch is superior. for T13 progression I out heal my whm during the second and third phase(we have a questionable whm) and my over healing is less. I definitely see whm being useless when astrologist comes out unless they give them some kind of unique skill that helps the raid.