MND stat builds are the bane of aggro if anything for WHM anyways, I find the extra PIE very helpful as heals are already very strong, consistency over inconsistency I say I think Piety will be the go to stat especially with PvP not having any on the gear and with the Cure2/3 and Medica 2 change More mana regen = the ability to buff more (Stoneskin, medica 2, Regen) on top of your standard healing toolkit. If you are pulling aggro too much, lay off the MND IMO.