Gunfights in Watch Dogs after beating the game

So I played and finished the story mode on Watch Dogs, and it was a wonderful experience, and I loved all the action - everything from car chases to gunfighting. Now, however, I am at a loss for how I can continue gunfighting.

After doing several Gang Hideouts, they have become exceedingly rare (Likely because they offer Skill Points, and thus are limited encounters). Now all there are are Fixer Contracts, but most of these are car chases and the like. I am looking for something similar to the story missions and gang hideouts, where you can scout out an area and then either stealth around and kill them silently, or hack their grenades to make them blow up, or environmental hazards, or get locked in an all-out gunfight and so on.

My first thought was to try and hunt the cops, which was easily achieved by shooting out a few tires on civilian vehicles (I'm Vigilante reputation - a good guy), but then I remembered that killing or even injuring cops causes you to lose reputation and become a bad guy... Thus, the fight with the cops eventually turned into a car chase. This was fun for a while, managing to get to 5 star wanted rating by switching cars as needed while the helicopter sniped me, but not what I was looking for.

Now the game is becoming dull because car chases just don't do it for me, I want to sneak around and shoot people. Is there anyway to bring back the fun the story mode presented with its various gun-and-run scenarios? Perhaps a console command to make the cop-killing no longer affect your reputation, or to reset story progress without losing your weapons/accomplishments?