In the men's restroom at my office building there are three urinals lined next to each other, and three toilets lined next to each other. It would be so much nicer if they alternated (urinal, stall, urinal, stall, etc.) I don't know about everyone else, but I don't feel really comfortable sitting on the throne while my neighbor is doing the same just three feet away. And there should always be working ventilation in bathrooms.