A director's dilemma

Rarely does every aspect of a project goes as you'd like, especially if the project has as many variables as a multinight improv comedy show. The dilemma that a director has to address is this: -

Over time will the show's deficiencies self-correct or self-perpetuate?

My personal tendency is non-interventionist, which means I have an overarching faith in my casts' ability to self-correct. In a statistical sense I am wary of Alpha Error; what doctors know as the mistake of acting on a false positive test result.

Put another way, I would rather lay myself open to criticism of possibly allowing a situation to drift than to be definitely guilty of micro-management.