First off I did the standard sort of stuff. Set up the elements of the Pose Room UI the way I wanted them, then saved a UI Dot. Then I did a few alternative layouts, like maximum size Document Window, and one with the Joint Editor open, one with the library pallet open, etc, and saved UI Dots. Also set up UI dots for the Material Room.

Killed 'Drag-Docking Enabled' on most things.

Set up the GROUND to diaplay normally.

Set up all the cameras the way I wanted them, longer focal lengths, Hither at zero, etc.

I added a cross-hair prop as an aid to positioning. Outline display style, and transparent so it does not show in renders.

When I make character morphs, the arms often get in the way of viewing the torso, so I made a pose to hide the arms, hands and fingers, and saved it as a read-only Pose Dot. And another one to show the arms again.

I added a set of custom orthogonal cameras that are easier to position, as the Poser ones are a PITA! The basic idea is six locked cameras parented to a prop. The cameras are then positioned by moving the prop. Once I have the prop lined up in all three dimensions with the point of interest, and scaled appropriately, all the six  cameras are also lined up and zoomed by the same amount. It's got its downsides, but it beats the hell out of the Poser orthogonal cameras, IMHO.

P.S.
I too like your ground shader affect.