Say, you throw down what for you is a very nice second serve. Nothing too overpowering, but easily 70 mph with decisive kick, directed at you opponent's body. And the ball lands so far in the service box that, before jumping, it appears to eclipse, visibly obscuring, nearly the entire width of the service line. And your opponent were already uttering the thing which is traveling 70mph to have been "long" or "out" precisely while it is exiting the service box, reaching for no mans land. If you were quite sure that your serve had landed in, and your opponent had "mistakenly" missed the call, would you consider it acceptable to "reward" yourself a "makeup" call? This would seem a reasonable way of policing unsportsmanlike opponents, of restoring any perceived imbalance in the score that may have arisen due to their myopia.