The P2 Digital negative system that allows making both matte prints and digital negatives with the same ink set has a lot going for it. But the changes from curve generations is confusing, primarily in terms of which ink mixtures go in which slot. I think it will be useful to designate your curves for pt/pd by the UV density range. It is well known that the UV blocking of the K7 inks is much higher than visual light densitometer would indicate, so that the Methodology 3 curves that are designated 1.4, 1.6 and 1.8 actually measure much higher by UV reading.
It will also be useful to have the profiles deposit ink in a linear manner, not only for pt/pd but for nearly all of the alternative processes since nearly all of them are much more straight lined than silver.
Sandy