Thats a very different idea, like it!
How bout futuristic neo fascism possibly in the NEG with a neo classical/helenistic sculpture with very strange imagery of fierce animals ie lions,eagles, soldiers and leaders
only very angular,rigid and geometric, almost verging on cubism but really terrifying,
possibly on a dead world, with propagandistic slogans graphittied onto a wall saying" the leader know all" and so on, and portraits/sculptures of this leader everywhere, ............basically really scary stuff based on 1930's germany/italy but with a modern twist...
If not that the second cold war could be a theme, Only different powers are at work here, possibly an intercolonial struggle between planets!
If not that, i seen a map done on a venice theme recently
a map on the theme could be brilliant depending on how its executed, have all narrow back alleys, and complex water ways in it, aswell multiple story buildings, some with half their front missing,
allowing for multiple/complex sniping opportunities and strategies aswell as the chance to move from rooftop to rooftop,
and jump from building to building without having touching the ground once+ you could get about trough water ways/sewers
...........the possibilities of that theme are endless!