There is nothing more annoying for UI than not being able to move that one item around or hide that one annoying widget I can't stand seeing, or changing the font to just the right size for my screen. For example, in WOW I couldn't move the chat window to the bottom of the screen, and that main bar below was in a fixed location - annoyed me to no end. In The Secret World, font size "large" was still way too small. In TERA, I couldn't change certain key bindings. For the developers to have more freedoms planned for FFXIV so people can make it just the way they want it, that is invaluable and will be much appreciated.