Took me a bit, but about <Looks at watch> two days into the patch I can already ignore the "Circle Swoops" and have started focusing on the numbers themselves since, to be perfectly honest, I have as much trouble seeing the swooping animation in the new UI as I did in the old one. So the Cast Timer Numbers are the biggest help to me.

Now if there was just something that could be done about the "Color Blind Unfriendly" parts of the HUD and UI it'd be perfect. (I know, I know, always something. But hey, even if it'll never be "perfect" good enough is still an option)