How can I move a dome light lower? (to avoid the horizont/ground in reflections)

[kosso_olli]

Map your textures on geo using traditional UV tools, use a lightMtl (emit on backside if needs be), set up object and v-ray props, and render away.

This kind of setup will render ages with motion blur and depth of field. Well, longer than the solo domelight approach.
Anyway, the only real request I still have is to be able to scale the size of the HDRI above the horizon line. Just like you can adjust it in Corona, they got a pretty good solution to this.