[Omnirizon]

Dominions is more like a hodge-podge of D&D themes. They have all the things that make good D&D themes (storytelling, creativity, mixture of history and fantasy), but lack the cohesion to compose a 'dominions movie'. Any sort of Dominions media would require limiting the focus to a handful of nations, and crafting a story between them.

The other option is to put the focus on a character or set of characters, to the exclusion of any cohesive relationship between the nations. You'd then end up with a 'conan the barbarian' style flick, where the different places visited in the movie never seem to have any sort of delineated relationship with any other place, and the whole story is following what some band of adventures (Bogus maybe) are doing.

the macro-quilt-work perspective that makes dominions nations and gameplay what it is just will not translate at all into a movie.

EDIT: another option would be to do something more 'star wars' like, treating all the nations as different worlds/races in the universe. Still, the vast majority of the nations would figure into the story only peripherally (if at all), and the focus would have to be on only two or three nations.