“standardizing” is simply setting down what we believe is our best shot at what should work. Once reality sets in, there are nearly always things nobody thought of – opportunities to learn. Capturing those moments is impossible if there is no consistent baseline in the first place.
And, just for the sake of argument, let’s say that the process, as designed, works pretty well. The question must then be asked: “Are we able to provide our customers exactly what they need, exactly when they needed it, on demand, one-by-one, perfect quality, in a perfectly safe environment?” If the answer to that question even includes a hesitation, then it there is work to be done.
Respect your people. Simplify the things that should be simple. Let them focus their creativity on something that matters, not on how to get through the way without screwing up.