Just a suggestion for something I would be interested in seeing. A present, the status effect bar for your own character is a single long bar, filled from the left with buffs and from the right with debuffs.
I'd like the option to have 2 separate elements both filled from either the left or right. This would enable maximum control in an already very flexible UI.
Alternatively, a single UI element with more configuration options could achieve this aim.
For example:
Option A: Single row, filled from each end (default)
Option B: Two rows (buff and debuff) filled from left
Option C: Two rows (buff and debuff) filled from right