Without the pictures I was figuring, the slanted the better, it keeps people from resting their drinks on it.
But now I see, one of the pictures has a paper cup balancing in the groove between the monitor and the CP.
If you build it, the beverages will come. So it's just as important to have a flat cp, so it lowers the chances of the cup falling over and the drink wont become a river running down the CP causing more damage.