Charm and Confusion are more like control abilities then they are aggro dumps, kinda like sleep or if you go the WoW way, Sap. I would even say Berserk is also a control ability. I dont see SE adding those here, i see a straight aggro dumb for Thief's, kinda like WoW's rogue Vanish or Feint abilities.
Its possible they add a ability that transfers threat like you said, something like Misdirect, but i would really hate it if they go that way.