I don't see any advantage to messing with a scope once it's properly sighted in. Do you think they "go bad" sitting in the safe? I'm not a "knob twiddler" and have scopes that haven't been(or needed) adjusted/changed since they were mounted and originally adjusted.
I don't do "drills". My shooting skills or lack thereof are a product of my own experiences and needs. I shoot what, when, and in the manner I feel like on my personal range.