I can't comment too much on the quality of the evil writing specifically (though in general I think the writing is really good and has me thoroughly engaged) but I've noticed some standout evil opportunities beyond just killing everything you come across. Like at some point you can have a devil come to you after having pledged his forces to the crusade and ask for the freedom to sign contracts with willing soldiers. He lets you see a sample of the contract (in writing, which I found delightful) so you can be reasonably assured it won't bounce back against you. So he gets your soldiers souls and in exchange they become stronger while they're alive, thus becoming better assets to you. Which is in my opinion top notch pragmatic evil.
