Others have brought up the idea of a showy character that would demonstrate why people might want to upgrade to P9/2012. I'd say Danae's Dublin would be a good candidate-she's somewhat unique and Danae has done a fine job with the texture and SSS shader

Maybe some animated yoga poses with and without WM would be a good visual.

 Dublin's render quality is very high- I mentioned the Reality2.0 banner using a Lux render of Dane's Dublin is currently at the top of this page. Why? It's gorgeous-and evidently the quality I see in Poser is not obtainable with DS.

 

The "Perfect" series creators have animated images showing the before and after-