I would think hand quilting through an interfacing would be very easy. Same thing for any kind of backing you might put on it to help it stand up to wear better. I think I'd just do some small stippling on it using a sewing machine and in the same color of thread as the block. The quilting will keep the fibers from moving around and the extra thread the quilting provides will help it wear better. I'm surprised the Kaffe fabric isn't a better quality considering the high price of it.