2.5 million visitors may disagree.
I have been to Cambodia over 30 times and most of those visits have included Siem Reap. I have visited the temples perhaps a dozen times and it is always a pleasant experience. I would agree that after 2/3 visits you have seen as much as you need to see - and unless you are a temple addict the short circuit is sufficient. The increase in entry fee from $20 to $37 is also a deterrent.
Keep watching...................I doubt that your wish will become a reality.
Farage is the only one who can develop into some sort of credible statesman.