"Talkin' John", an old carpenter I worked with 40 years ago used to say, "Don't do TOO good a job. Folks will begin to expect it."

He followed his own advice.

An old guy who owned a business where I worked 35 years ago got a complaint that a car had hit a deep hole in a gravel/dirt road leaving his parking lot. He told a worker, "Go fill that hole with dirt!"
The guy replied "But....that hole's full of water; it will just turn to mud!"
The boss answered: "Well... at least there'll be mud!"