Quote - Simple answer to your first question:

Poser is an entry level, hobbyist app at a very low price.  It can do remarkable things for the money and exceeds its original remit by several orders of magnitude.

OK, then how about Poser Professional, which lists for $499.  Surely a professional program that exists solely to render figures should have some kind of soft body physics by now.  Why is everyone so quick to defend this glaring omission of the program?

Quote - As for games, they're optimized for a particular set of systems and generally use low poly models.  Poser has to work with high density meshes on a wide variety of systems.

Bottom line is, pay more money for a higher end app and you'll get all the soft body dynamics you want.  At Poser's price point, it'll be a while in coming. 

It already has been a while.  They could just do what Daz did with Carrara, and use bullet.  They could use a spring solver like Reallusion did with iClone...

Then again, I'm equally surprised no one from the community has tackled it either.  I'd hoped PoserPhysics would have provided a way, perhaps using magnets.  There are jello-magnets, but that limits motion to the morphs a part has (and I've never really had much luck with that either).

I really hope there's some attempt at providing a solution in the next version, I can't think of anything more important left to add at this point.