I've been spoiled with my little old 28' Class C (no slides) which has 14 windows, most of them large. Of course this has meant a lot less storage area, but I do love the natural light flowing inside, the views outside, plus I like fresh air.
Now that I am shopping around for something different, I am amazed at how some rigs have such tiny little windows or no windows. Some windows are missing as much as a third of their light because the designers are obsessed with big goofy valances that could have been put above the window rather than covering a huge portion of it.
Some have sinks that face a wall. If you eat at home a lot, then there is a lot of sink time. Who wants to stare at a wall? A sink facing the living area or a window is a must have for me. Some rigs have tiny sinks, did our pots, pans and dishes shrink cause it's an RV?
RV designers should spend a year living in a rig as an internship. ;D