What about abilities that proc on having dot on target like bounty hunter. You have absolutely no hope to see it as useable because everything is grayed out all the time.
That's my biggest problem with it. It isn't making me sick or anything. It is just not functional, state-dependent abilities were the main reason I was looking at the hotbars to begin with. Some long cooldowns were hard to see before and the new UI does fine for that with the flash for me.
Ultimately, I'd prefer countdown numbers at 10 seconds below.