Well, the P4 dolls are still useful;  they are much lower poly than the DAZ gen3/4 dolls (or current P8 dolls), and have only a few material zones.  This means that they can be used to populate scenes at relatively low cost in system resources, while you have one or two "hero" models in the foreground.

Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

Silo Pro 2.5.6 64bit, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5