Not to start trouble, but corn farmers do not worry about how green their corn leaves are or how it holds up to being mowed regularly. Neither do wheat farmers. As you said, yield of harvestable crop is the main point. I consider nutrient recommendations as base guidelines that may be added or subtracted from based on observation of response to applications. Each site or lawn can be different in terms of soil or microclimate. Lucky you if all the lawns you treat are on exactly the same soil, same humidity, same temperatures, same light levels. To the OP, what does your soil tests say concerning detectable potassium in the soil? No real advantage to boosting potassium levels too high. Clay soils tend to retain everything applied to it. Calcium levels, magnesium levels? How acidic are we talking about? A soil with a pH of 5.5 or lower is a candidate for lime. Dolomite lime is for soils that are also magnesium deficient. Calcium lime is for soils that have too much magnesium. A pH of 6.0 is something I would leave well enough alone. Adding calcium and sulfur to that involves gypsum.