Overall, though, I'd like a more unified approach. Instead of separate cloth, hair, physics, morph tools, weight mapping etc. it would be nice to have one basic simulation which can be configured to simulate all of those things, and more. If a figure bumps into the furniture, I want to see their skin being depressed, and their clothing correctly caught between the two surfaces instead of popping out in some random direction. When they sit down, I want to see the chair cushion squishing. This implies that figures and props would be able to have their physical characteristics defined across their surfaces.
This would definitely be cool at least as an option. I think it's almost always great that you can choose what order the simulations run in, because it least when you have more than one dynamic cloth item, it often matters. Also, I think there is a lot that can be done with the bullet physics in Poser, I've just never learned how to use it. I don't think it would quite do what you want, but I feel like I've seen at least one example where someone used the bullet physics instead of the cloth room to simulate a drape.