I am new to the board too, however I have done extensive work with fleece and embroidery. I am making a flannel quilt with a fleece backing this year though. Couple key points: Quilting on top is to stabilize the pieces so that washing/use do not cause it to bunch. Minky and Fleece are very stretchy, so large areas may stretch out of shape if not quilted. I did a flannel 6in squares on point and plan to quilt in a straight grid pattern. Another note, if you are doing any type of decorative stitches on a heavy pile fabric (fleece, minky, etc) even if it is the bobbin work, I would recommend using some wash away stabilizer like they use in embroidery machines. This is designed to keep the stitches above the pile, otherwise your pretty stitches will fall into the fabric and you wont be able to see them.
Just my 2 cents
Hope it helps