wait, that's a whole load of weird assumptions.  i mean, i think the capability to easily make props with external geometry would be nice.  but why in the world would you use prop settings to do what material settings are designed to do and pose settings are routinely hacked to do? especially, when it makes really messy file organization?  i have several props from DAZ that were distributed with this really annoying method of adding new textures, and it was even messier than usual to associate material settings with their sources.

for the average person, the right thing to do is load their textures and make a new material room preset, not prop preset.