A Battlefield game set in a domestic law enforcement setting would be the ultimate satire of the burgeoning paramilitary element of law enforcement, merging the worship of military hardware and unaccountability with the ludicrously out of place domesticity it finds itself is placed in.
Imagine the player is put into a SWATing scenario, or your local city's drug task force has amped itself up to take down a drug dealer's stash house based on an anonymous tip that got the house numbers reversed.
You could find yourself bursting into a living room through the wall you took out with a breaching charge, having lobbed a flashbang, and your finger on the trigger of a tricked-out MP5 and a collapsible laser dot scope centered on the forehead of a five year old stuffing his face with Oreos.
Or maybe the dad's a returned vet from an actual foreign war (BF tie-in), and because you didn't announce who you were he's gone for his gun and now the actual soldier has to be taken down by the pretend ones. The game should pop up a cheevo titled "Castle Doctrine" when you and your teammates shoot him seventeen times.
Going by parts of the trailer, the game could explore what law enforcement purpose a character would give for equipping a claymore, or explore the moral ramifications for a playthrough where the police officer sets up a sniper nest and liberates the brain pans of a half dozen of his fellow citizens who were standing around a pot stash ("Head Shop" trophy).
It would require deft handling so as to not give the impression that it's just glorifying a seek and destroy mission of ethnic minority citizens of the United States or the urban underclass--instead of some safely foreign terrorist group with a generic islamish name, or amalgamated military composed of all the armies of South America or something, a conveniently rogue foreign general, or a futuristic PMC. There should be a chapter devoted to why your team had to kill the drug dealers with a Barret sniper rifle when you've always had them surrounded, know where they live, go out to eat, sleep, play with their kids on the playground, and had no pressing deadline where the world would end if you didn't stop them right now.
And you can explain why you levolutioned the town's water tower down onto the high school.
It would have to be both outrageous and yet grounded in the human and legal realities of a complex and gray morality play.
The jingoistic and yet safe power fantasy formula of big-league shooters made me skeptical that bringing the Battlefield to the local mall and all those neighborhoods we haven't gentrified yet could be handled in a manner that wouldn't be interpreted as being absurd.
The game would need to keep to something more realistic.
This is the legacy EA wants to draw from.
I think we're in good hands.