I really like your quilt. However, the pink sashing does retire because the smaller but darker cornerstones dominate. It is an opportunity to do something special in those pink areas that seem to retire. I am always impressed when each segment of a retiring element is given a special treatment in the quilting. It is an opportunity to use special thread such as heavier weight. Perhaps use stencil designs and treat each section independently. I would use a big design in the dark border but perhaps in black so it is elegant but understated.