Sideshow probably won't do it because they usually go minimalist with their bases, but what I would love to see is a Doom on a parapet or castle ledge, gesturing to his populace below, with part of the castle wall behind him.
That gives the statue a foreground (stone, gargoyles, etc), middle ground (Doom himself) and background (the castle wall) that would seriously evoke the sense of place.
This is similar to what IS did for their Daredevil. Placed above eye level, the vertical orientation- emphasized by the taller, relatively narrow background panel- gives it a strong feeling of extended height, even though it comes in at a very modest 23" tall.
Having the character focusing downward helps sell that feeling of height as well.
