I'm recently back from 2 weeks in Dornoch, and I can assure readers of this thread that Coull Links is well below the radar of most locals and long-term visiting golfers such as me.
Having walked the land, and being familiar with a number of Coore & Crenshaw courses I have no doubt that a great course can be built there, but do have doubts that it will be financially feasible, unless significant infrastructure is built in and between Dornoch and Embo (where CL will be situated). Dornoch is overwhelmed by visitors in the high season, and most of these visitors stay elsewhere because accommodation and watering holes are very limited (particularly at the high end, where CL visitors will want to frequent). Embo is a very small village with one local shop and a large caravan park (Grannie's Heilan Hame). I very much doubt that high-end golfing tourists will want to stay there--unless a Bandon-like reservation is built near CL. But, of course, posts above assure us that these facilities will not be built.
Even if they could be built, would destination visitors spread much lucre over the likes of Tain, Brora and Golspie? I doubt it, for many reasons (about which I will happily write, if anyone cares to listen).