THOR: THE DARK WORLD Concept Art Reveals Comic Accurate And Much Cooler Alternate Versions Of Malekith

Imagine this? It'd be amazing.

Literally Aaaaany of those except what we got what have been amazing especially the one kevwebsz shared above.
Would have been amazing to have had malekeith a sorcerer like he is the comics.
And have the story build elements that were used in the third movie.
Have svartleheim a prospering civilization that uses both tech and magic but is more magic heavy and mystical in its architecture. Bor in the old days saw them as a threat and wiped them out during their earlier fit of conquest. But we're not told that story, we're told that asgard was retrieving the reality stone from a radical dark elf who was seeking to over throw dark elf leadership and lay vengeance upon those who committed the genocide of his people.
This will build the idea in third movie that asgard royalty were aggressors and conqueres, something Thor wanted to move beyond. A trait that Odin wanted to move beyond and when he saw that aggression and lust in Thor in the first movie he cast him out.
Thor 4 could build further upon that theme by introducing Mangog.