Much of the lack of "dramatic perspective" when using a dome is due to using texturing images with a (nearly) linear rate of change of horizontal distance from the center, whereas they should show an exponential (squared, in particular) rate of change.  The difference will become greater as you approach the horizon.

     For those making sky dome texturing images, try using the widest angle available, so that near the edges of the image, the horizontal sky distance covered by an edge pixel (which has a greatly oblique perspective) is many times that covered by a pixel at the center (which has an orthogonal perspective).

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