The one and most important option I miss is the ability to drag the tank aggro bar out to the screen and close the omen window all together. This allowed me just to see the percent & time til aggro gain on the target it was in, without it taking up so much room. I would put it next to my other raid windows and one bar worked so well.
In the new version this option isn't there yet that I can find. Is this going to be worked back in on omen2?