yes, some quilting can be overdone......it should enhance the piecing and compliment it, not disguise it with its own design, but I am sometimes more concerned about under-quilting...I have been quilting for a longtime....and LG for a good many years, but my own rule of thumb in either hand or machine quilting is empty spaces should be no more than the size of the four fingers of one's hand. I know the battings now are so much better than they were years ago, but I believe that if there is no stitching or tying for too long a space that batt will get lumpy after awhile too. This is just my own rule for myself-(and the quilts I do for others).