You should by fire and sword because it'll be the first Taleworlds product which will permit you to deal with those annoying enemy lord prisoners
any way you like.
If you've seen the work I've done before on Bandit King, you have some idea what's coming.
I don't force the player to be a bastard, I just give them the freedom to do so. It's up to them to deal with the consequences.
Besides, how can you act nobly if you have no opportunity to act otherwise? Only when you refuse to commit an act that would profit you at the expense of the innocent do you rise above that choice.