Like others have said, 4 is clunky and I struggle sometimes to understand what I am doing.
However one thing I appreciate and am hoping this will get added.....is the ability to change the look of my hardware. For instance, I have the m65 in white. I was able to change that in the software to reflect my device. If they would extend that to all their devices it would be great to give that personal touch For example, I have the Vengeance Pro RGB RAM in white, but it won't let me change that, and the h150i has 2 caps with it, it would be nice to change that to match which one you installed.