Quote Originally Posted by AmiableApkallu View Post
Telling a client program to talk to {server over here} versus {server over there} is actually relatively trivial. The real trick would be convincing the FFXIV launcher to actually launch the server program locally in addition to the client we all know and love.
It's not launch the server locally, it's host the server locally. It would mean running all the notoriously spaghetti server code client side without actually behaving as server code, eg no load balancing, no instance management, etc.