I had these shoes which I liked, but I had the same problem as I had with many other shoes. I was getting blisters and I tried so many ways to avoid them, but nothing. So I tried to refashion them without fear. If it wasn't ok, I would throw them away.
I took a sharpie and cut all the unecessary and made it a sandal:
I kept this detail for a future refashion. Do you have any suggestions?