Rest Areas: Large, off-highway parking. A couple small buildings with restrooms and vending machines. Only out in those areas which are along roads between cities. Picnic tables/benches and a few trees.
Night Club: Large wide area dance floor with plenty of zombies around, drugs scattered here and there, and a bar. Could be an ideal place to find drugs and electronic gizmos to tear up or put to use what with all those fancy lights and sound systems. Back office area with some side rooms.
Billboards: Large signs off the sides of highways, metal and wood.
Printshop: Huge building with plenty of open space, roll to roll printers in various straightline,H or U configurations. Office spaces, lots of paper and wooden skids around. Plenty of rubbish and totes / carts of various sizes. Perhaps some fork-lifts they would have used to shift the paper rolls from dock to shop.
Wal-Mart: Anything and everything you could want, tons of zombies around though. Lots of open space and a wide smattering of retail goods. Guns and food would probably already have been looted out, but there could be some in here somewhere. Maybe like a mall, but it would be totally unclosed (Never found a mall yet, no idea what they’re like. I’ve heard some stories though)
I wouldn’t mind seeing more internal house designs either. Are these set-design structures or are they randomly generated internally? i.e. House 1 plopped here with 180 degrees of rotation and House 4 plopped here with 90 degrees of rotation. Or are they a random collection of rooms inside that fit the house shape?
I could be imagining things, but it seems like the houses in towns are broken into neighborhoods of a sort. One run-through, there were a few motorcycles on the street and all the houses nearby were simple, solid structures. Lots of Cycle-gang / Cycle-enthusiast type loot lying around like cigarettes, lighters, leather jackets and even the all-weather suits (Which were great finds, in my opinion). Where you might find a few electric cars out in the street, the houses nearby were all more upper-middle-class. Fireplaces, large rooms, lots of bookshelves and other fancy accouterments.
Some of these may have already been mentioned, but going through 59 pages of suggestions (Some of which are dated pretty far back) went beyond my digging threshold 