Medium Retaining Wall
We have short (1-wide) and long (4-wide) retaining walls. Since the long wall only covers multiples of 4, longer stretches often end up needing short walls to fill the gap, which hurts the look.
A medium (2-wide) wall using the long wall's texture would fix this. A 10-long stretch, for example, could be built from 5 medium walls, keeping the nicer texture throughout instead of relying on the short wall.