Stuff the ILS idea at YBCG - it just isnt viable for geographical reasons as mentioned.
Rather than quibble about an ILS at Cooly why dont we have Cat II ILS's at all the major centres!
Much more useful especially during those winter fog times along the eastern seaboard that cause massive disruptions that can take over 24 hours to rectify.
Having operated into Cooly literally hundreds of times over the years, aviation would be far better served by having more flexible ILS minimums at all current facilities.