I appreciate your input. I went ahead and left the blue cornerstones in place and added a black border.
It was nice of you to help me realize that everyone likes different things, and I don't know what the baby's family will like, but I hope they use it! I put some of what I learned in quilt class to use, and did free motion quilting on the whole thing. Usually I just stitch a grid, which gets awfully boring. My free motion quilting needs a lot of practice still, but it was fun, and babies aren't too fussy about stitching.
Happy New Year!