I feel like, especially on a modern layout, if you're going for a "prototype" look, you should definitely have one (or a few) "out of service" industries. Because in real life, sometimes just to get to one industry that's active, you'll have to pass one, two, three or even more out-of-service spurs. Sometimes the switch is still there, just orange-locked. Sometimes one or more points has been removed... sometimes the switch is totally gone, but the spur still exists just off to the side of the main, rusted and overgrown with weeds, small trees, etc. Sometimes all that's left are the ties.