It appears to me that the stacking is going away unfortunately; however, being a holy trinity setup, I think the new talent Elemental Oath makes up for it. Instead of 3 ToW for 9% hit and crit I'll have Elemental Oath up most of the time if not always for 6% crit and reduced mana cost (pally will be happy) + 3% crit and 6% spell damage from the one ToW. The loss of +hit is a bummer but I can cope with this swap. Obviously this change will be felt more by the 5 shaman teams.