I don't think the problem is people expecting perfect photos, it's the problem of people expecting that they have a right to take photos for free when other have spent a lot of money making it happen. Since the line is entirely viewable from public access, there is no legal enforcement mechanism, as there would be on private property. Moral suasion doesn't seem to work in America.
The C&TS has limited funds and needs to spend that money generating and satisfying paying customers. Giving the railfan community a $70,000 - $100,000 freebie probably isn't in the cards. The question is, how to raise that kind of money so that everyone can participate, whether they paid, could have paid or even have no intention of ever paying.
The British have built entire new steam locomotives from money raised by subscription. The German's run Plandampf steam events where money is subscribed and if enough isn't raised, the event is canceled and everyone gets their money back. I'd hate to see "Coors" painted on the side of the rotary, but perhaps it could be wrapped for a few hours to make a dynamite Coors commercial that would pay for the next two days of plowing. I'm sure thought is being given as to ways to make this work.
Michael Allen