Right - here we have some consolidated 3x3 images, and I've also added in a curtain for when the chair is full (I couldn't be bothered with having something partially transparent, plus I didn't really know how!).
Easy one first - existing sedan-chair-only images, with door closed and curtain visible:
Sedan Chair (occupied)
Next, we have 3 sets of 3x3 images ... standing still (door open, no curtain), running empty (door closed, no curtain) and running full (door closed, with curtain). I can't think of anything else - hopefully mapmakers will have ultimate freedom to do what they wish (or at least they will once the collection size restriction is fixed

).
(only directions 1-4 shown on forum due to image size ... other directions are obviously done)
Sedan Chair 3x3 (standing still)
Sedan Chair 3x3 (running empty)
Sedan Chair 3x3 (running full)
BTW, to answer Grommits earlier question about size ... the carriers are the same height as the human_male figure, so you can judge from that. I think the chair itself is about right (and I don't want to recreate all those images again - even with Blender and my GIMP batch scripting it took a while!).