After installing my V-tech tail light covers and found that the key was next to impossible to use to open the hatch, I too was thinking about someday removing the key well. It stands out way too much on a light colored car (mine is Light Parchment Gold). Did you fill your key well, or cut it off the back and patch it. Since the covers are ABS plastic, did you have to use any special auto body products to complete your job? Looks good!
One other thing I was also thinking about is removing the finger slot cut into the top of the rear bumper.