The desk is well put together and easy to put together. It is very stable and has an 'open' appearance which to me is nice.
The plastic trim pieces (including the light bar) are optional and don't have to be installed. The predrilled holes are fairly small and not very noticable if you decide to do without the trim pieces. I personally didn't install the corner pieces as I felt it was wasted space to have them on. My only complaint is I wish the trim and light bar matched the material used in the other parts of the desk instead of being plastic. Thankfully it isn't flimsy, they're just held on by small screws.
I also read a comment somewhere that the lights only shut off when your PC shuts off. Which is true, just remember sleep is not 'off'. In case someone looks for this specific answer: You can hold the button that changes the colors on the light bar to turn off the lights.