...and/or budget and start to have to reuse footage in dream sequences or time travel episodes, or need to resurrect past villains in inane scripts (Wrath Of Khan was an exception to this, obviously)? Or even worse when they have to start cutting corners on props, locations and clothing. I mean, it would be such a tragegy if Mythbusters ran out of money and had to cut Kari Byron's clothing budget.
Still, back when writing was a well-honed, imaginative craft like in the original Star Trek and Outer Limits, it did not matter if Dodge City looked two-dimensional because what was explored was the human condition and its archetypes. Nowadays, most shows fall flat even with all the bling-bling and visual razzmatazz. All the thingamajigs in the world don't amount to a hill of beans when the landscape of your mind is smothered by tons of visual detritus and overused writing gimmicks.