Cute. It does appear that it would benefit from additional quilting. I like the idea of blanket stitching, although that might be awkward with the number of layers at the seams. I like your idea of quilting every other outer segment. If it were mine, I would use hearts. For boys, however, I would use simple wonky 5 point stars. An alternative might be a row of stitches, decorative or plain, about 1/2 way out the outer segments. Another choice might be on diagonals of those segments, Outside to inside on one, Inside to outside on the next, so that you get 6 inner and 6 outer points. I hope this all makes sense.