I can't wait for Wrath, for a few reasons.
One, new dances and customizion options. I'm honestly tired of the current dances and (facial) hair options, so something new would be great. Especially that barber shop they're tlaking about, where I'll finally be able to shave off this beard I regretted putting on my guy for ages.
Two, NORTHREND! I'm a lore buff, so exploring this place is gonna be just awesome, with all it's history and what-not. Especially Azjol-Nerub, can't wait to see how the Old Gods fit into it.
Three, siege weapons and destructible buildings. Now that just sounds really awesome. It's gonna make pvp feel a little more rts-like, which should be great, and not to mention driving around in a balista or steamtan.
Four, death knights. I can't wait to see how they'll work, their resource system with spells, how their weapon mechanics work, and not to mention their starting area. I'm excited to experience freeing one from teh grasps of the Lich King.
Five, some graphical upgrades. Looking at the pictures, Northrend looks just beautiful. The visuals look very smooth and soft. So that's gonna be fun. Have oyu guys seen the new fire animations? Though I'm not 'too' fond of them, they're still pretty sick.
Six, Arthas. I'm jsut plain excited to see how we interact with him throught the expansion, not to mention other characters, such as Anub'Arak, which a blue posted we will intereact with as well outside of raiding.
Seven, I've read Blizz will orient the new continent to more solo playing, which will be great. I'm tired of not being able to do anything without a group in Outland. As much as I like doing things with other people, sometimes it's just too difficult to find a group, much less a good one.
Eight, THE ASHBRINGER! Wooo! I can't wait to see how it's lore will fit into Wrath, it should be awesome.
Nine, Tirion Fordring! He's just plain awesome, do I even need to explain?
Ten, the Order of the Silver Hand's revival. This will be just great, can't wait to see what kind of things they do or what we'll get from them.
Eleven, Caverns of Time The Culling of Stratholme. This will be just plain epic. Fighting along side Arthas, slaughterign the innocent, cinfected people of Stratholme? Facing off against Mal'Ganis? The possibility of watching Arthas disband Uther's Order? Just. Plain. Epic.
I could probably go on more, but I think you guys get the idea. This expansion will be just awesome. I think most of you give Blizzard too little credit , especially in their ability to learn from mistakes and improve.
So lightend up guys, barely anything in the game has been announced yet, only concepts, no hard facts or numbers yet. Judging it based off old mistakes and concepts is just plain idiotic. Not to mention, it won't be coming out for a long time, so there's still PLENTY of time for them to work on fixing old problems.