I can tell you that coming from FFXI with the PS2 and PC versions, Square-Enix believes firmly in equality and everything being even. So if there are any differences, it'll likely be subtle, but don't expect a drastically different UI for PC giving any one platform an edge over another makes for an unfair balance.

With that said, the menu system does need to be overhauled. While somewhat fixed, it's still VERY slow, and unnecessarily complicated. The on-screen hud looks perfectly fine. there's room for improvement so I can't say it's perfect, but it's been a highlight being able to custom make the way my main screen looks.