Looking at the bass in question, if it was mine, I'd consider the refinish if I had no great desire to sell it.
I don't subscribe to the 'if it's mashed, it's valuable' theory, but that's just me.
I like a nice looking bass, with minimal wear - some wear, yes, but that's gone beyond the point where I would buy it.
I think if you get it refinished to look original, it would be a nice thing to do.