This is part-and-parcel of a new expansion and certainly would expect nothing less. I've always found the expansions offer tons of new zones, quests, etc. The critique here is that the tone of the game seemed to be shifting in a very obvious direction, but it seems like it was scrapped last-second for Warlords. Based on the presentation--what are the raids, who are the bosses, what is the lore, what story does the cinematic tell--it almost seems like you were not prepared to reveal a new expansion at BlizzCon.
P.S. - I don't mean to make you sad. As you know, the game has a pretty passionate following.
Nothing was built and then "scrapped at the last second" in fact, from what I know, the developers have been working on a lot of this plus more (future more) very very hard. If you read this blog
(if you didn't see the live stream) by Bashiok, you can read more of the dungeons and Raids that are planned. The "Warlords of Draenor: The Adventure continues" panel live stream also went more into the story and who you're going to see and meet there (the original warchiefs like Grommash, Durotan etc.)
The trailer shown for the announcement is more of a tease, but if you look at the main image, those are all orc warchiefs that those familiar with the original Warcraft RTS will readily recognize. This is a chance for the Alliance to take the initiative and go after the Iron Horde and it's a chance for the Horde as it is now to rediscover who they are and what they're about. The story is about YOU as a hero as well, facing down an incredibly powerful and dangerous foe in order to protect Azeroth as it is today.
It seems that there's still a lot of information that you're missing and if you didn't get the live-stream or don't plan to, might I also suggest spending some time reading the articles on our various fansites and listening to their podcasts? (We'll try to gather as many of them together for you as we can to help too.) I think that might help you understand a bit more about our plans.
As always, this is just the start of things and as development progresses, ideas, and implementation of those ideas may change, but we'll try to share as much as we can as we go along for you.
I must admit the whole garrison thing could have been cool but bliz just flat out got it wrong again... I would much rather see a GUILD garrison. Would it not be completely awesome if your garrison was attacked by random bosses/mobs and had to be defended by your guild. I picture huge armies of gnolls charging your gates or some random rock giant eating your walls... Make the events random and give some world loot for defeating it, or suffer thru massive costly rebuilds if you cant.
Much like the farm was a first step, consider this another step. People kept asking for player housing and we had to find a way to make it truly a part of Warcraft and not just a place to collect dust bunnies. This is what we've come up with. Could guild structures be something that comes about eventually? It just might. Not getting something now doesn't mean it's not possible some time in the future. It may just happen. We didn't just come up with Garrisons overnight. It took time, planning, thought, and technology to all come together. It's a great addition and you'll still be able to bring your friends and guildies into it to visit and maybe even show off your elite Garrison planning skills. ;)
Wait...we're actually getting Draenei Lore? I thought that didn't exist?
Getting some? We're going to their HOME. We get to get up close and intimate with who they are, what they're about, their lore, their, struggles, their triumphs, their defeats. We get to find out so much more about them (plus no one crashes a space ship.) Are you sure you're ready for it?