What are you talking about!?! Of course be able to render motionblur is one of the most important factors for any 3D render in order to be successful for any kind of commercial/feature work. Why you think Arnold is so loved? It crunch out motionblur like none otherRefracty wrote: The motionblur could be easily applied in post with a motion vector pass.
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As long as you have opaque, large objects without any kind of DOF (DOF in post) your fine with doing MB afterwards.. But as soon as your doing transparent objects, small thin objects, extreme DOF.. Well then you can sit and stare at your motion vector pass as much as you want hehe.. Give us Mooootionblur!