If you give yourself the the correct factions then the enemy will always attack you and then no assaults' or murder charges, but then you will always be the enemy to those factions. IE stormcloak walks into solitude and you will be attacked. more realistic but makes the game much different and realistic. This can be done with a patch and new game. But you cant just wear Imperial armor and hide your faction like in FONV, This si why Bethesda made the game the way it is. Factions were lazily done compared to FONV, and you cant do every quest because the factions would block you . If the City of solitude is your enemy how could you be Thane there.