Save the state of the anchor point in comp settings
Currently you have to go to the Advanced Tab, set the anchorpoint, then go back to the General tab to change the dimensions of the comp. If you change the anchor and close the comp settings, it will revert back to center by default. This is unintuitive and can lead users to believe it doesn't do anything. The anchor point is only relevant when changing comp dimensions, so those two things should be associated.
Integrating the "scale comp" script functionality would be great, too. Allow for changing by percent, maintain aspect ratio, and a check box for "scale content" with comp. People are already familiar with how Photoshop works with the difference between changing image size vs canvas size.