This isn't the post I was planning, but it's what I've got available today. This is a fairly basic UI layout I think, and it does have some double information, specifically ICE HUD and the standard portrait info. I use ForteXorcist for multi-mob DOT tracking, and Power Auras to track DOTs on my current target. I added scrolling damage text so I could get an idea of how hard I'm hitting, but I'm pretty sure that's going to be coming off soon - it's just too confusing.
There's really no need as far as I can tell to keep scrolling damage on my screen. Maybe if it was BWL and I needed to see if a mob was resistant/immune to a certain type of damage, but that's not the case with anything really. Plus, I think I'd figure it out after a few seconds. IceHUD is probably going to be following it pretty quickly as well, though I have gotten pretty used to having that up there. I think if I add an aura for < 35% mana, boss < 25% HP, and no Soul Link - I can completely remove that.
I'd also like to get rid of Recount, or just set it to only show after combat - it's just one more thing taking up space, and it's not like I'm going to change my rotation mid through the fight. Omen is already disabled, thanks to the change in tank threat. Since I open CoE>BoD>Corr - it takes a few seconds before I'm even dealing damage - more than enough time for the tank to secure agro.
So there you go - my delicious, overcrowded, needs some work UI.