I have gone back and retconned the letter Emilia got so it now says 'Runescape' referring to Isaera's family, because it was likely a typo on JWL's part, and it's funny to me that she spent all this time memorizing names and had been given a bum steer.

Shamanism and the light do not have any true conflicts. But both tend to form the spiritual core of the societies that adopt them, pushing out reference to the other. Which is to say, having two practitioners together under one roof, using different disciplines, isn't a mechanical problem; just a philosophical one. And, basically, the understanding that humans and the other alliance races have of shamanism is quite weak, since they have so little of it in their own ranks presently. The Wildhammer and Darkiron shamans are presently estranged from the Bronzebeard dwarves; the Draenei haven't shown up yet; and the Kul'Tiran wavespeakers are shuttered off from the world, wounded at a national level by the betrayal of Jaina Proudmoore at the battle of Theramore.

Likewise, the Horde races don't much understand paladins. They understand the light as a powersource accessed through intermediary powers and tools - troll priests drawing it through light afilliated Loa spirits, and forsaken priests through the same rituals they had in life. But Paladins are almost a different breed because they manifest their powers with the same physicality and instinct paired to their learned wisdom that one might expect of a shaman. And while Forsaken are able to remain priests though it pains them to do so, no Forsaken so far has been able to channel blessings and seals like a paladin does. This bifurcates paladins and shamans on either side of the faction wall, but the power of the elements, which come from Azeroth's own physical-spiritual corpus and the elemental realms connected therein, and the Light which comes from one of the great external planes devoted entirely to the Light, are not inherently hostile to each other. Indeed, they're natural allies - though this is not something the world of Azeroth will grasp until the restoration of the Sunwell and the arrival of the Draenei, in the conventional timeline. In this timeline?

Who knows?