I think RIFT'S UI is pretty customizable if you take the time to get to know the system. But one thing that has given me issues since I started are the inventory and bank bags. I moved them and put them exactly where I want them and next time I open my bags they've drifted across the screen. This is incredibly anoying and there are no setting to fix this unforunately. Please, please, please! Is there anyone out there with the knowledge and willingness to make a Bagnon style addon? Please I am begging for your help!