Brick piers for modular brickwork system

English Wall Bond and Stretcher Bond piers and pier caps for my modular brickwork system.
400x440mm piers, with options for flats sections to join walls too. Options are free standing or pier top with no flat sections, one side with flat section for wall end and two with options for corner or mid wall piers.

I will split into individual units and update as I get time.

Scaled at 1:1 (I am an architect so tend to draft at full size). Scale reductions below:

OO Gauge 1:76 = 1.3158% (or Multiply by 0.0132)
HO Scale 1:87 = 1.1494% (or Multiply by 0.0115)
N gauge (uk) 1:148 = 0.6757% (or Multiply by 0.0068) - note mortar joins might be too small
1:35 (e.g. Tamiya tanks) = 2.8571% (or Multiply by 0.0286)
1:72 (e.g. Airfix) = 1.3889% (or Multiply by 0.0139)

Useful scale calculation tool here - https://www.scalemodelersworld.com/online-scale-converter-tool.html

Please suggest modules you would find helpful.