I have no plans to play Epoch myself, but I enjoy the show.
Here are my thoughts based on what I've gathered by observing these threads:
>Kezan
Anime posters, troons, hotbar mouse clickers, tourists, zoomers
>Gurubashi
Old school players, tryhards, gooners, your average wow players before retail became what it currently is
>Menethil
Dad gamers, NPCs, RPers, wagies