You really shouldn't have the freedom to just punch and kill everyone in DA:I, not unless the game also has meaningful consequences to go along with them. Like, I should not be able to just walk into Cullen's chambers and beat the living sh** out of him for no reason, not unless the writers create a new path that reflects what I've done. If he just complains and things go like normal, then the option was pointless.
The meaningful consequences doesn't require much though. If you do the crime you must do the time. If I walk into Cullens chambers and started beating the crap outta him I can either fight him to the death (which resulted in everyone ganging up on me) or I can surrender (Cullen would engage in dialogue asking me to surrender), and be taken to jail... Just like Skyrim.
In American Army if you shoot and kill your officer you get teleported to prison
in which you must start a new game or go back to a previously saved game.
As a mage only player if I commit a serious crime (Murder using magic), and I get caught I would be teleported to a prison chamber surrounded by Templars, as I'm shackled down on a table, and then be made tranquil. After the ritual is completed I would be ported to Josephine's office. I would be given simple instructions to give paperwork to other people. Instead of leading the inquisition I would live the rest of my life as a servant tranquil.
Oh I like the idea of a bounty.... I can pay my way out.