(D) Modular.  All of Poser is modular in that you can drop whatever you want into a scene whenever you want, but I only do poses in a setting if they are specifically dependent on the setting - leaning into the ropes of a boxing ring or leaning against a wall, for example.  If the pose can be accomplished anywhere, I never clutter the scene with props or set dressing.  Same for working on everything else - if it is hand held, I need the hand but, if it quite literally stands alone, it is the only thing in the workplace.

Everything I make is stock, in that I will use it in more than one setting with a variety of figures (poses included as best I can manage).  If I need a boxing ring on the beach with aliens smacking each other around, well, that is just another day at my house.

To make sure everything fits, though, it is set dressing (beach) > large figures/props (ring) > everything else (aliens).  If I do not establish the size of the stock set first, I have to resize everything else as I drop them in.