UI is not messy tbh,since everybody plays with his UI.I play with simple UI,if you remove the right part of UI(only used for bg) you got clear screen,most of pvpers always play with simple ui,so do i,i do not rely on addons apart from 3(intterupt bar,and Omnicc..It was said do not expect skill wise,only crazy dps numbers.Flickering in end was problem due to render,some problems apparently.Still indeed plenty of way to improve.Also regardless of skill you die to mage anyway.Those numbers are not quite healable.