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You've never had it so good, you have Poser figures that have weight mapped morphs and dynamics for crying out loud - you even have total control over joint driven morphs.  People need to stop whining and start learning the technology that is already at their disposal in Poser.  You can already do anything you will ever need to do with a figure in Poser if you learn how it works.  And as long as Smith Micro keep up the characters and add the right features to Poser - I really don't see a problem.

I can't remember who said it, or even which thread it was in, but I agree the best way forward for vendors is to start supporting the characters that come with each new release of Poser (it makes perfect sense).  Roxie is a perfect example of that, she's a nice mesh with 'character', yet there's like a million outfits for V4 and Genesis and a lot of them still look like V4 or Genesis.

What about Roxie, Rex, Miku?

I think the market pretty much determined their fate a few months after their release.  I'm sure we could argue over figure x is better than figure y, but ultimately the market will decide if a figure has the features it needs to switch over and support. Then you'll see that reflected in the various market places by products created by vendors. So really you can see where those Poser figures stand in relation to other figures by vendors supporting them with content, because that's what the market wants.