the original wiper contacts looked pretty good to me ... I've had games where most of the contact was gone, along with the tip of the finger.
the worst game wore the finger down into the contact mounting hole and the contact fell out. Game still paid correctly.
united already saved wear-n-tear on the search relays by not powering some when a win wasn't possible ... if you save the contacts also(and lose the early search relay chatter), you're gonna put the parts guys out of business