Legion sounds awesome!

Okay, for once I got to watch BlizzCon streams at home in real time!  All in all, I'm excited about a lot of the stuff they talked about.  I'm not super-stoked about playing Marksman without a pet, but it's for sentimental reasons, not mechanical ones, so I figure I'll just swap over to Beast Mastery when I want to visit my pets.

But what I am looking forward to...  (If you don't have livestream access, try Blizzard Watch for info and lots of pictures!)

• The new Hearthstone adventure:  Okay, it's not a WoW thing, but I literally yelled, "Oh, my God," at the screen when they showed the Golden Monkey card, so... yeah, I'm kinda stoked.  I don't play enough Hearthstone to get past rank 15ish, but I play enough to get to 17 most seasons.  So slightly more than casual play, but not a lot.
• The whole artifact customization system:  It kind of reminds me of FFX-2's dress sphere system, lol.  But I loved FFX-2 (it's the only one I've actually finished), so that's really a plus for me.
• EAGLES
• The transmog system.  I was commenting in guild chat as I was watching it, and everyone seemed excited.  I've done a lot of quests on Duskhawk, and I've got a pretty awesome shield collection... on a level 47 alt on another sever from my warrior and paladin that will actually be relevant.  Only having to get something to drop once to use it in transmog for all the toons that could equip it will be really helpful for shared armor types for the classes I mostly heal on.
• Atonement focused Disc!  I've been playing Discipline (or a Discipline-heavy hybrid spec) since Vanilla, and I loved when they added Atonement.  It feels weaker this expansion than in previous ones, but I'm looking forward to the soloing survivability returning again.
• Okay, so when they started talking about the Subtlety rogue as ninja thing - yes, yes, that is why I made my rogue in Vanilla.  I spent most of that panel just kind of happily gibbering.
• Improved UI!  Every quality-of-life improvement they make just makes me that much happier.
• Meaningful profession content!  There are days all I want to do is spend three hours going in circles mindlessly mining - and now we won't even have to compete for nodes!
• The changes to the mob-tapping system also make me happy; I was doing Throne of Kil'jaeden dailies Saturday morning on my Disc priest, which is a, well, slow process.  And the event to spawn the Succubus boss popped up.  So I go up and start slowly working on the elite mobs there.  I can kill them, it just takes a while.  And a hunter comes up and starts killing them, and I was glad even though I wasn't getting objective completion just because it went so much faster, but in the Legion system, I would have been getting completion credit, and loot, and that would have been nice!  People might actually help you kill stuff in passing more often because it benefits them!
• The seeming mashup of daily/weekly quests and bonus objectives - show up in a zone at max level and there will be some content there to do!  No need to hit up a hub, just go to the map area and do it!
• I want to be excited about what they're doing with dungeons - I like the concept - the folks I mostly ran dungeons with up through, like, Wrath stopped playing for the most part around Cataclysm.  Maybe if I find some new folks to run with regularly.
• The frickin' Scythe of Elune.  Okay, I did like, all the quests in Vanilla.  All of them, as in, when they first put in gold at max level for quest rewards when you couldn't get the quest XP, I went and did every quest I could find.  And so I did both the Alliance and Horde branches of the Scythe of Elune stuff, and they dropped it, and then in Cataclysm in the Worgen stuff they finally wrapped that up, but I'm so excited by the presence of the Scythe of Elune that I'm debating making my druid primarily Balance instead of Resto to start out with that.  SCYTHE OF ELUNE.  
• I like the idea of my hunter getting a Windrunner-legacy bow, but I've been transmogging into the Golden Bow of Quel'Thalas, and that's aesthetically hard to beat. (It's bigger than my Tauren.)  But I really do like the idea, and it sounds like the progression process for the artifacts will have lots of story meat.  And story meat is the best meat...
• NONI GREW UP and he has bacon for us!
• Baby mooses!

See? Bigger than my Tauren & 100% awesome.

So that scene at the end of the movie trailer, where he jumps off the balcony onto his griffon to fly into combat? THAT. THAT IS WHY I LOVE FLIGHT ON MY DRUID.

I'm kind of stoked. >.>