AST has The Cards - Buffs
SCH has Shields & Debuff+Dots/Bane

WHM Needs something to stand out... Am I Right on this? is this what ppl want from the WHM?

How about 'Blessings From The Elementals' Debuffs or Buffs - WHM uses Earth, Water & Air... Maybe Lowering Enemies Elemental Resistances 'Magic Damage Debuff' for few secs or a 'Buff that Raises your Physical Defence or Magical Defence', something using those Three elements as Basis maybe?