Room for Improvement
One thing that I like about the power plug that connects to the MacBook Pro is that it is magnetized, to help the plug snap into place when you bring it near the body of the laptop.
One thing I don’t like about the power plug that connects to the MacBook Pro is that it is smooth and cylindrical. So, if I am trying to connect the plug to the computer, but there is a little tension in the power cord, it can be difficult to rotate a smooth, cylindrical piece properly into place.
Even some disposable pens have trianguloid grips (like the one in the photo above) or have small divots to make it easier to hold them. The plug for the MacBook Pro should be like that too.