Hmmm. I see one assumption that may be a fallacy here; that Poser is locked into the current way of boning and jointing. A new system like weight mapping wouldn't require the removal of the older axial system, you know. It could be left in place for the backwards compatibility with existing figures (although I'd be willing to bet that there would be a flurry of people who created a new boning setup for their favorite older model.