I have to +1 this, it would be a lot more convenient to have them in all major towns opposed to two major ones. Is it my being lazy? Maybe. But, back at topic at hand, it's a pain when you're teleported to a place with no teleport stones (which rarely happens, I know, but work with me) and the teleporter can only transport you to places with NO Emissary and you REALLY want that quest done as soon as possible. Yeah, there are two Emissaries, but it wouldn't hurt to have them in all MAJOR cities. That is, provided, it's not too much of a pain in the ass for the developers.