Undermine, despite the Cartel system being atrocious at launch, still was miles better than Ka'resh simply because you got what you expected.
Karesh was one of the biggest waste of potentials in a long time, and what we got wasn't even that good. I don't know how you can say that open-world-wise, Ka'resh was better, when all it had was warrants, which people did a whole 6 times for the achievements, and Phaseshifting, which just meant you couldn't fly.
On that note, the Undermine Soundtrack actually got nominated for the Hollywood Music in Media Awards. (
Granted, I do think the Karesh Soundtrack is better than Undermine. Adam Burgess really is the best WoW composer in a long, long time.).
No way it will win when you have KPop Demon Hunters in the running, but still.