It sounds like you do know what you want though. ^^ Shiny visions of a future, cool tech that doesn't need paragraphs of explanation, possibly with an overhaul of society be it some dystopia with rampant crime. Those can be pretty cool and could merge a few fandom concepts together to create. The question would be, what do you see happening with the plot or roles? It wouldn't hurt to just write some stuff down on your own, like a small flash fiction to play with ideas, even just a small one inspired by a kick ass picture~?