TL;DR: You can change the world settings to a scale of 0.001 (for specific 3D printing uses).
I never really touch the world Scale settings, particularly because it might mess up with other systems inside of Blender (particles, physics, and such).
Maybe I'll change it to imperial now and then for a specific project with that kind of dimensions preset.
And while knowing to just add the couple zeros to get real world measurements with the conversion from meters is super simple, I just did a test model where I changed the scale to 0.001, and centimeters (personal preference).
It actually made a lot of sense in the process! The bevel and solidify modifiers were more intuitive too.
I do think it makes it easier to check for smoothing and shading when we model it as close as possible to the size we'll use it in, if not precisely it. So it made sense to me to model things in 15cm instead of 150meters.
I have no clue if that would affect my usual lighting workflow and such, and if I intend to make the model for a normal 3D scenario I'll definitely stick to defaults. But for the model I just did, intended to just be a hard surface project that will just go straight into the printer, I think I'll start using this.
Dropping this here in case anyone wants to give it a shot.
