I personally would rather have more ability to customize UI elements. Its frustraiting me to no end that I cannot pull the cast bar off the target display, and why can't we have a party list that looks more like our alliance lists? Also, resizing elements on predetermined scales? Common SE =(

As for saving your own settings, there stored in your My Documents/My Games/FFXIV folder, so people with a little tech savviness can already migrate there settings via USB or cloud.