@JoyHawkins @Wirenut -- I think keyword rankings are important to track and pay attention to. As I've mentioned, we've become big fans of Whitesparks keyword ranking / tracking tool and are considering moving to it in mass.
We leverage these types of tools for our own internal analysis to help us gain insights into our work. Sort of like beacons that help tell us if we are moving in the right direction or not.
But to ultimately measure / determine success based on the performance of a pre-defined list of keyword phrases, you are making an unrealistic assumption that your list of keyword phrases sufficiently captures and represents the market.
However... I do not believe anyone can fully understand and capture the full scale and magnitude of search -- which is why productivity is a more realistic point of measurement.
How many different ways does someone search for "lawn maintenance" in any given city?
If your keyword tool shows 10 searches per month... the reality is probably more like 10,000 searches per month when you account for the "intent based AI" of Google search, not to mention the influence and impact of voice searches, misspellings, key phrase variations, mobile vs. desktop, and so on...
This is why I believe it's insufficient to trust pre-defined lists of keyword phrases, and their performance in rankings, over actual productivity.
The productivity (phone calls from new customers, for example) is a more sufficient indicator because no matter what obscure keyword phrase(s) someone searched... if they searched > tapped the call button > and are now a new customer... you, the business owner, would consider your presence in search as productive, no matter how obscure the keyword phrase was that was searched.
In other words, I think it's more prudent to measure productivity vs. keyword rankings because I believe productivity is a function (direct result / outcome) of keyword rankings.
You cannot possibly assume to know the volume and magnitude of searches that are occurring in any given market... to think otherwise is -- in my opinion -- a reflection of not fully understanding the scale, magnitude, and value of the true nature of search.
P.S. I'm typing fast because I have to run... I apologize for typos, sentence structure, etc... this is a challenging conversation (which I appreciate) and I feel a bit reckless typing my thoughts on the fly.