I've been a long time running MMO player, and I understand what the OP is trying to state...but...they are completely forgetting that the more you play a role the easier it becomes. I cannot begin to tell you how many times I've played a DPS role and I rarely even look at the hotbars. Not even a full second would pass when I glance down or use the edge of my vision to notice I have a flashing proc. Poor UI placement and management would easily spell the doom for anyone. Before you start complaining about the complexity of the game you should spend more time researching and modifying your own UI to better fit your needs. I've managed to get my party list next to my hotbars so that I can see them both in one glance. Boss casting easy fix is to focus target and I've placed that next to my hotbars as well. SE added in the UI management for a reason and before you start going off complaining about the overload you should spend more time in the UI adjustment features.