But I'll try,
a. The fan controller has a high and low setting. Why it has it is beyond me, since turning it to high doesn't really do anything but light up the LEDs and add some noise. Le fans are not able to cool any better just with that step up in my experience. (It's already excellent to begin with.)
b. Inconsistent color schemes are annoying, but at least blue and red works well together. But I to this day have no idea what the red accents on the top and front are for. Just aesthetic?
c. Backpanel has a tiny bit too much flex, so the panel can often not quite fit right. Fixed by... actually, I don't recall how I sorted that out in the end. At first I struggled by using third limb and shit.
d. Default LED color is blue, and if fans are ever off you must manually set fan color back to your desired color.
e. Removing the bottom fan filter is annoying, as it is incredibly long and thusly requires your machine be a distance from the wall...