the problem with that is that there are no "good" companions.. if they had a system where good actions would clash with the companions then you would have to play the game solo as good...

every single companion is bad...

red prince is arrogant and only wants his rule back and thinks of everyone else as slaves.

lohse is controlled by an evil demon that forces her to kill quest npcs and will supposedly do something to cause immense destruction later on where the gods themselves ask you to kill her

sebille is a crazy elf assassin that likes and gets pleasure from killing and murdering people...

fane is an undead who cares little for the other races and would rather see them dead

ifan.. is a criminal but beyond that is probably the nicest one of them all despite being a criminal.

we dont know much about beast yet but he is apparently a pirate so he cant be all that good either.