The QuickCurve-K3 is an Excel based system that uses premade smoothed curves for matte or gloss inks with easy options for adding the toning inks. All you do there is install the starter curves and then print and measure a linearization target for each set of toning curves. The linearization system is built in and has options for adjusting the shape of the final density, so you only need QTR for printing and installing the curves. I just posted the latest update this afternoon that has the addition of the matte starter curves, options for data smoothing (for people on Windows that can't use Data Tool), and a slight change to the linearization formula.
And for the K4+ printers... I've been working on something for the last year and I literally just finished the final piece at 2AM this morning (now I just need a few more screenshots and some edits to the instructions and a webpage and a blog post...). Basically, I wrote my own partitioning formulas (see my QuadToneProfiler-Pro-DN system for how it works for digital negatives). This new version for positives will use the same general workflow along with an additional set of tools for adding and adjusting the toning inks so there is no more need to use an ink descriptor file (I haven't used an ink descriptor file for nearly a year, and I am always making and testing new curves). I hope to have it out in the next week so stay tuned.
Richard Boutwell
http://www.richardboutwell.com/