Due to the balancing changes here:
-dragon shaman is more tanky - you get 100% of your blessing spell % value, other chars only get 75%.
-healer deals more damage - gets 200% (i think? or 100% idk) of their nature's enchant value, while other chars get the normal value.
Best course of action is to play double mage, so dragon shaman tanks the most of the damage while healer can deal the most damage. It's both efficient and fun tbh