Honestly I thought the no-flying thing would have pissed me off, after being able to fly in Draenor but oddly enough I'm enjoying Argus and the no flying thing is not that bad. I play a druid tank so maybe it's like cheating but with travel form + jump + mass entanglement + shadowmeld things are really good, and if I aggro every mobs in the zone pulling a rare it's fine too. Also, if I have HS (Vindicar) on cooldown I just go to druid class hall > portal to dalaran > Vindicar. For other classes I could understand why is annoying though.