Realism in renders isn't the be-all and end-all, by any means - especially with Poser and its user base. But what you do often find is that advances to certain elements (say for example the material room from P5 onwards) that increase realism actually offer great new options for non-realistic rendering as well.
Someone mentioned 3d Anime earlier in this thread. Think of Olivier's(RDNA) Toon Art shaders and their clever use of material room nodes - not possible to do toon renders quite as good as this prior to P5's introduction of the material room and P6's AO, which also enabled artists to achieve much greater realism.
It's a funny game this software development.

 

PoserPro2014(Sr4), Win7 x64, display units set to inches.

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