I was really excited when the new UI was announced, and I was really looking forward to it, but then it never actually got implemented on the live servers. It was only briefly available on the test server. I'm sure SE has still got the necessary code and project files for this kicking around somewhere in their office database. Surely it wouldn't be too difficult to just take what was available on the test server and push it to the live servers?
FFXI - New Interface (Test Server) 2013