I have a couple things I appreciate:
1: B vans in general. Compared to them, class Cs are just no fun when scooting around areas looking for a place to park. Similar with other methods of RVs.
2: The Transit EcoBoost models. Time for Colorado and the other places that leave the normally aspirated vehicles gasping for air.
3: Waterless drain traps. No more replacing air admittance valves, no more gray water stank.
4: Combined water heaters/furnaces that run on LP gas or electric. I appreciate the space savings.
5: Ford's five digit keypad. Quite useful.
6: Sportsmobile's ability to do very precise custom work. I mis-specced something a while back, and they were more than happy to upfit a van with a 24 volt battery system if I wanted it.
7: Winnebago's diagrams and parts online.
8: Other members here who put up with my ramblings.