Some of the best holes I have ever seen were made great by out-of-bounds:
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the 12th at Pacific Grove
Internal o.b. is often a last-ditch solution when there is a safety problem you can't solve otherwise, and some people will flay you for it just like they do when you have a bunker and a tree together. You know the type -- the sort of black-and-white thinkers who can't get over their own code of good design, and accept the hole as it is.
It seems to me that the hole is great only for the small percentage of golfers that are able to control their ball relatively well. It also seems to me that probably Tom could have come up with a routing for the property that matches, or exceeds the current routing that does not have internal OB. I may be a black-and-white thinker adhering to my code of good design, but I don't think I need to accept the hole as it is if a better routing would have prevented internal OB.
Of course, I am also the heretic that thought Egan's routing of the front nine made it the better nine than Neville's routing of the back nine. I think the seaside aspect of the back nine gives people heart throbs that artificially raise their rating of the inferior nine.