Nice. That should come in handy, especially at high resolutions.
I'm Cory Kolek, also a UI programmer here at Bioware Austin. I originally implemented the UI Customization feature, and I'm always looking for ways to improve it. I just finished adding the option to change the scale of your buffs and debuffs within the operation, party, player, and target frames. This change has recently entered testing, so look forward to it in a future Game Update!
Since you're a GUI guy, would you be the person to work on chat bubbles as well?