I only watched the first episode of season two so far and man I'm never really a source material snob, but sheesh, the Dark Lord was really running for elections trying to get Orcs to follow him, got stabbed to death by some Orcs, and even looked like he was considering not being evil. Wtf all that about?
All the other source material changes I'm like yo cool whatever, you need to adapt the story to a new medium so it's all good, but seeing Sauron go out like that made me feel like wtf