IMHO: One of the counter productive things about grouping. Leveling rate is typically increased but there are some sacrifices made. When done right everyone falls into a role which limits some of the handy stuff to have. For instance, a Cleric will spend most of their time healing and buffing which makes their combat skills lag behind everything else. Ditto for a Bard in that they probably won't be the main tank but expected to play their group buff songs which makes things like Dodge fall behind. Would be nice if it was put into the ~learn by watching category like languages. The Warrior main tank ripostes, the Ranger learns riposte. It would probably need some checks to make sure the learning by watching character was actually live.