I myself play FFXI on my windows pc with a gamepad so I can navigate around with both keyboard (macros, mainly) & gamepad (menus & movement) & looking at the new images, it doesn't look good. Prone to many glitches & errors and I don't see why SE needs to change the UI so late in the day for the game.

I think there is a simple solution, however. Under "Windows" option in the menu, give us the option of either "Modern" UI (the new one) or "Classic" UI (the current one we're all used to). This then gives us flexibility in how we want to play FFXI & we can switch comfortably between the two UI. SE can also monitor how many people use each interface.

Remember SE, we are the customer & if we cannot play the game with ease, people may start to head over to FFXIV sooner rather that later.