I'm actually glad to see them taking rendering to the next step! Zbrush is fannnnntastic for concept design.
That being said, I wish the implementation of the material system was ala Maya/Softimage/Max/UDK/etc. Having a node based schematic view is so much easier to grasp visually and very, very good for organization/management as well as sharing macro'ed assets with others.
Same thing can be said of the first implementation of the pass system. It's cool that we can have ZB put out a bunch of different passes but the management/organization of them just isn't so great in its current form. Having something like the Softimage pass system and have the zbp file stores all the passes, cameras, lights, etc. would be great! I know that's a huge endeavor and we'll most probably NEVER see anything like that but hopefully it's not too big a put off in expressing thoughts/ideas.
Regardless, the work shown here is phenomenal and glad Pixo and the team keep pushing the envelope ever further!