If you don't use dev textures, that's good!
Because you know what theme you want for the map.
Meanwhile you don't use... uh... i don't know...
test textures everywhere (Those that are just colors)
If anything I'd say it's because the dev textures make maps feel much, much smaller than they actually are. Of course, spending hours picking textures isn't a good way to get out your alphas.
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