Honestly?
To me it's fluff, window dressing.
About 1995 I/we sent in a long list of practical wants to Autodesk. Some of the wants included things like the ability to apply true radiased fillets to 3DPOLYs, real time stretchable solids, the ability to have layer colors / linetypes unique per viewport, a hidden line algorythm that worked in high precision with an exposed interface for programmers, yada ...
... Practical suggestions that would truly make AutoCAD more powerful, flexible, extensible. They responded by sending two deskers to our office. "Oh these are truly great ideas Michael, we're so greatful you folks took the time to detail them ..."
<cough>
It's been 10 years. What I've observed in that time is that they spend the majority of their development efforts on dazzle factor features that constitute nothing more than the streamers on a child's tricycle.