Well, I futzed and I fretted all day, trying to decide what in the world would make this last dishcloth look better. I didn't particularly like the raw edges, since I felt it didn't look "finished". So I decided that I would do an applied I-cord, but just picked up stitches along the edge and worked a knit purl and knit rows, and wove in the ends.
The result was pretty! I was satisfied, and it's now in the drawer with the rest of the pretty dishcloths. I put the scraps back in the scrap bag for when I make a monster rug, and below is the pic of the final, acceptable cloth: