Haphazard boxes, purpose built or aesthetic built?
Painted, stained, or raw wood?
Facing, or whatever it’s called when you have with trim for to the edge of plywood, as in I’m not sure if facing is the word I want and I don’t want to look it up?
Power integral to the shelves or not?
Have an area for the computer? A spare file server?
Shelves on door hinges to double up paperbacks?
Get back into building the book train idea for the paperbacks? (I had a coworker remind me about that)
How much load is this going to as to the wall?
Oh yeah… What bling? Lights, integrated speakers, bronze inlays, relief carvings, motorized rails? You know, bling.