A cryptic whine

My current screenplay project is too much for me at the moment, so I am going to post a list (senseless to all but me) complaining about problems I don't know how to solve (timely objections from anothersomething notwithstanding).

The story takes place in 2045 or so.  The tensions in the social fabric of the USA have come undone again and the US Army's heaviest casualties occur in a war with secessionists in the southern states.  Our hero, Langley, wants to get away from the front line and is guided into investigating a biotech company which is not producing biotech.  The tech in question is equipment (nano-technology etc) that lives in the body to repair it and protect it, something Army would obviously want.  The script currently owes itself the following:

• clarity about the law on nanotech. When is it grounds to kill a person and destroy their body without a trial, just for survival / disaster prevention?  What is the mechanism that does it?  Lasers?
• clarity about the devilry of the major devil.  While there is a bit of moustache-twirling, I haven't really got the relationship to Langley, York, and Troy clear in the text.  If it does get clear, do I lose the tension in subsequent scripts?
• A decent set of clues and very concrete bits of evidence.  (I dislike detective stories - I shouldn't have started one, perhaps)
• An alternative to animated 'data mining', which is realistic but terrible in a story.
• Action to carry conversation: no one is busy.  It's all a bit 'miss marple' but without even wastrel hobbies to form a background while people answer questions.
• Hell needs more setup.

Thanks for bearing with.  Now, unconscious processing, go!