I wish they'd give more options or rework the party UI.
Quite frankly, it's cluttered and poorly designed. You can work with it and get used to it, sure, but it does it job rather poorly.
The emphasis on each element is completely fixed, you can't increase or decrease emphasis on HP bar, level, job icon etc., cast bar hides the name of the player, MP is always on and visible on all jobs, you have no way to adjust anything, no black/ white list for buffs and debuffs, buff bar limited to 10 icons which is quickly reached, no way to increase spacing between elements without making it mega sized in general. One SGE alone can make your buff bar explode after an aoe and elements easily blend into each other if you have poor eyesight.
I've seen some really neat rework ideas that still keep the current style but offer more customization.