I'm very much aware of that, though some of those decisions can be derived from the lens specifications.I doubt it, I do not know how the many different lens formulas they have tried affect the variables. They try to balance all the factors, while, of course, giving maximum sharpness. One formula may be sharp but have curvature of field, another might have more CA, and some might have more lens elements running up the cost, weight, and reducing light transmission.
However, the bigger question was, do you notice that you would be using the lens in a different way than Mark I?
How do we deduce which lens formulas they tried and what their properties were?
I would not use the MK I, I had five and did not like any, and sold them. So any sustained use of the MK II at all would be different use.