I am making a new quilt for my bedroom, it will be an extra large queen. I have quite a bit of fabric left over (as I couldn't get my colors just as I wanted them, so bought more fabric!). I was considering piecing the back of the quilt to use up fabric (no particular pattern). Then I thought - why not make it reversible?! My extra fabric is cut up small, hence thinking of another pattern for the back. As I consider this, it occurred to me that I will be adding a lot more seams. Will that make the quilt heavier? What about free motion quilting. Does it make that more difficult? I FMQ on a DSM. I have pieced my backing before, but it was with large pieces, so not a lot of seams. So now I am unsure. Are there additional cons to doing this? Good idea/bad idea?