I've been looking at the mesh of established creators to come to some consensus of how dense the mesh should be. I assumed there would be a standard, or a range of sizes depending on how close people would be expected to see the item. Unfortunately I find that meshes are all over the place. I opened a bunch of items in Studio then exported them as .obj files, which where then opened in Blender. The two unmentionable items are very dense with a close-nit mesh. The chairs where, to my mind, not dense enough. I played with Sub-D settings in Studio but am stymied because I thought that selecting increased levels of resolution in the items Parameters panel would show as smoothing in the viewport. I had to select Sub-D in the menu for the item's geometry (see screenshot) before anything happened. The item then looked smoother but there was no corresponding increase in the mesh density. My questions are...

1. Does Sub-D need to be selected in 'Edit'- 'Object' ---- (see screenshot) by the user in order to see results in the viewport AND have the choice in the item's Parameters panel? You can select higher levels of resolution in the Parameters panel but nothing seems to happen in the viewport until after you've selected it in Edit-object-Geometry-Sub-D.

2. Selecting Sub-D doesn't actually add any new geometry, it's just 'faked'(?). If there is new geometry added, it's not displayed in the viewport.?

You can see a perfect example in the two shots of the chair from the 'Reading Room' set. The one displayed as Texture wire shaded shows noticeable hard edges on the front of the seat cushion. After selecting Sub-D via the Edit menu AND selecting a higher display resolution in the chair's Parameters panel, the front of the cushion is much smoother but there's no additional geometry displayed. Oh ya, the one pillow is all triangles. This wouldn't subdivide would it? So triangles are fine IF you have no intention of it being subdivided(?)

Thanks for any insight into this.