Good ideas. I keep forgetting about SS2. I thought about CA209, but wasn't sure the brown ones looked wooden enough.

Drawing them would allow me to use the same wood grain as the floor. I guess my subconscious brain was ruminating on this while I slept, because I woke up with the idea of changing the direction of the draw fill for every other step by doing the "Angle by Edge" function on the opposite edge, and then removing the angle by changing to a Shade Only Copy. And it works! You still get the plank divider lined up every other step, but that's not so bad.

Really great map, and some pretty advanced techniques for a first-shared map -- like making your own stairs and dealing with transparency acne. Nicely done.