I don't expect that a flaw of that variety would increase much over time. If the blemish doesn't bother you, I'd say polish them up and keep them. If it's around the side and wrapping down towards the bottom of the shoe, I doubt anyone would notice. Even if they did, I don't think it would create much of an impression, positive or negative. Maybe, you could take a picture that captures more of the shoe to get more input.