Light weight non woven interfacing was the basis and "life blood" of the "watercolor quilts" that were so popular several years ago. I have used it to make really quick pieced quilts too - it does make the quilt a little heavier --- you can use 1/8" instead of 1/4" batting if you want to reduce the "weight".... but to my mind it is a great and simple alternative if you are concerned about dealing with all the bias edges....and once the quilt is done, you will not know it's there. Remember - there are no quilt police.
Good luck with your quilt.