I have always been curious to hear what goes on during a showing or open house. I never have gone to the open house though, or spied on a showing with surveillance equipment. I'd love to though... really get a feel for peoples reactions. I applaud you for going to the open house, why not?
As far as people not wanting flips I can see both sides of it, but I can also say peoples flips vary from slapped together ready to sell to fully renovated houses that feel like new construction when you walk in. I don't know that I could leave some old outlets and fixtures around the house thinking it would help me sell any faster. If anything I would think it would take longer... If I was walking through the house and it was a flip and a bunch of little things were missed I would think the house wasn't done thoroughly.
It's to each their own though. Some people love the idea of a freshly renovated house. It should keep the maintenance and repairs down for a couple years as they establish themselves in a new home. It's all about the right buyer finding the house. If you put out the best product at the best price it will sell. The future homeowners just have to find the house.