I am one of the people you mention that has issues with dimensional accuracy from time to time. I own a CNC machine shop so printing is a useful addition to my business.
I bought an S5 after trying a cheap Chinese printer because I simply don't have the time or inclination to tweak and test constantly. By and large it does what I wanted, I can go from design to print in no time at all and the S5 is reliable and does an excellent job until dimensional accuracy becomes important.
The intent profiles would be excellent for me except I don't use any of the materials they have intent profiles for. I use mainly CPE, Nylon and Nylon/carbon. I am not alone with this as I have seen a few other posts regarding accuracy which brings me to an idea.
What about a forum for people to share and request profiles. This could be divided into sub forums for different model printers much like people share files on thingyverse?