I'm one of those people who liked Mists of Pandaria. I thought and still think that it was a solid, well designed, well developed expac with a lot of solid new lore, well designed content, and that its major flaws were a lack of dungeons as the expansion continued, some PvP issues, and that deadly year plus with no new content at the end. So while I'm heartened to see Warlords having a positive effect and people excited for it, I'm not down on the 'stupid pandas' trip a lot of people seem to be on. If you didn't like Pandaria, that's your call, but it doesn't make those of us who did less intelligent than you. It's just a matter of taste.
That said, I'm in a paraoxysm of joy over the draenei lore in this expansion. I haven't leveled Horde yet - my tauren's getting impatient, but I have so much to do on my main it doesn't feel like the right time yet. Draenor is an incredibly well designed and executed expansion so far. It's a joy to play through.
Q4tQ: I haven't gotten into the new dungeons yet, but recall that, difficulty-wise, they're supposed to be somewhere between Cata and MoP. Is that about where they are?
I'm of the opinion (based both on my own experiences and those of my friends) that some dungeons are harder than others. Slag Mines has issues if you're melee, as an example. I'd definitely argue that they veer towards the Cataclysm side of things. Skyreach and Auchindoun didn't seem too bad.