As we all know, the only way to get the Pristine is to bet your luck on thousands of expeditions that one of them will give you the highest quality you want. For a location with many exhibits, the probability increases exponentially. So we know TWM is not a gotcha game. The probability must have a limit or at least can be broken by some method. 

Therefore, it is time that some methods should be discussed that can stably get the Pristine. 

For example, add a gotcha limit to let the program give good luck after countless bad luck accumulates; add an expedition prop to get a highest quality (or +1) directly; add a system that allows lv3 location to specify an exhibit.