I really do not think that way often. I try to appreciate other courses for what they are, not what they're not.
If you re-read The Confidential Guide, the course I most wanted to fix was Yeamans Hall, and we did get the chance to fix it, not by redesign but by restoration. The three holes at SFGC have been on my list for a long time, as well. But I don't want to blow up other people's courses and stamp my own signature on them, even if they ARE a wasted opportunity. I would rather just design a new one somewhere myself.