Cut off tops, then trim out our existing newels to look like this?
Simple flat boards as the ballusters? Also like the color combo
wall by stairs, for lower portion of our staircase?
Balusters -- wide, maybe flat?
Spacing on baluster/room divider;
Fencing as railing
Bookcase on pony wall. Square balluster
More light in the shower area, built in space for shower supplies.
Panel trim, may look tidier than a book case.