As one comment said, "non-quilters never notice". This is SO true!! I just finished a commission quilt, and I was SOOO stressed about the custom quilting, but the customer was so thrilled, to the point of being in tears. She never saw all the flaws that seemed to huge to me.
I would trim the blocks another 1/2 inch (to make a 11 inch finished block), call it a "new design" and go from there.