Patrick, templates fall under the "if it ain't broke, don't fix it" mantra. Nobody replicates a poorly designed hole/green.
Few, if any of the prototypes are exactly replicated - there is often a nuance, be it distance, windage, bunkering, internal contouring, green size, etc. The short hole at Lookout Mountain is very different from the short at Forsgate, but both are easily recognized as templates. Similarly, the redans at North Berwick, Shinnecock Hills and Naitonal Golf Links of America are distant cousins, not identical triplets. Same holds for the Biarittz holes at Old Macdonald, Black Creek and Blue Mound.
As you undoubtedly know, templates work because the originals are so damned good. I have become a huge fan of the Macdonald/Raynor/Banks line.
Bogey