The next covenant featured is Maldraxxus. This looks to be a martial realm, with several warrior houses.
The main character featured is Draka, mother of Thrall. Which brings up an interesting point. In most Western, Christian-inspired versions of the afterlife, it's a place to be reunited with your loved ones. Draka's husband is Durotan, who died alongside her. There's not even a mention of him. Instead, WoW's afterlife appears to be closer to the Norse Valhalla, where the dead have a job to do.
One really weird decision was to have Draka train as a rogue. There's already a famous female orc (or half-orc) rogue: Garona. It seems overly repetitive to have Draka become a discount Garona. I think it would have been better to leave Draka as a warrior.
Otherwise, I don't know. This video seems like you're supposed to go, "OMG, Draka is sooo cool!" But if you don't, there's really nothing else there. Kind of honestly, the most interesting bit was the mention of the House of Plagues. That seems like a pretty unusual martial House.