Name one good thing of each expansion

[Deleted]

- BC: Voice Chat (lol jkz) Arena.
- Woltk: Barber Shop
- Cata: Transmog
- MoP: Account wide Achievements/Titles/Mounts/Pets

[McNeil]

TBC: Blood elves
WotLK: Arthas & death knights
Cata: Thats its finally over
MoP: so far pet battles

[Cairhiin]

Classic: Atmosphere of Ashenvale and the game in general. Blew me away.
BC: Awesome raids
WotLK: Ulduar
Cataclysm: This is difficult, there's nothing much I liked really. Let's say Transmog for lack of anything better.
MoP: No clue, didn't buy it.

[Deleted]

BC- Black Temple
WotLK- glyphs/ dual talents
Cata- Graphics upgrade
MoP- Serpent cloud drakes perhaps.

[Spl4sh3r]

The Burning Crusade: Heroic Dungeons (with attunements to them)
Wrath of the Lich King: Achievements
Cataclysm: ....
Pandaria: ....

Not sure about two latest expansions. Can't think of anything at the moment.

[shimargh]

really?
ppl enjoy belfs and DKs!?
I always thought them as a joke....

tbc > almost the whole tbc
wrath > Ulduar
cata > entry "hardness" (i mean at first it was "hard" like the good ol'times, but after that...ugh)
mop > versatility

[Lilfrier]

I didn't play until Wrath, but...

BC: Flying Mounts--Some people don't like them for ruining on-ground interaction, but the game's just too big to constantly traverse by ground mount, in my opinion.
Wrath: Northrend--I've always been a fan of snow-based levels in games, and so having the snowy Northrend was right up my alley.
Cataclysm: Firelands--The main thing is the gear. I have always hated the tier gear for Hunters (I'm a Hunter, obviously), but I thought that Firelands had a great set. My favorite part was that the helmet looked like Shannox's head, which is an awesome thought (I'm going to kill you...then wear your head). I also really liked the variation of fights, which were cool.
Mists: Pokemon, for starters. I love the Pokemon on here, and it actually convinced my to resub. I also find the questin to be really good, as I've always hated questing, but actually enjoyed myself quite a bit this time around. Even the dailies are entertaining to me, and I like the overall depth of what there is to do at max level (LOTS of dailies, FarmVille, Pokemon, raiding, Sha of Anger was fun, etc.)

[Fenixdown]

BC : Dailies
Wrath : LFD
Cataclysm : shared lockouts
MoP : PET BATTLES!!!!

[axell]

BC : Nagrand. Yes, really!

WOTLK: Ulduar x100 . Everything was perfect. EVERYTHING!

Cata : Uldum. (As you can see I love everything titan related)

MOP : Monk. They are so goddamn fun and versatile.

[Orby]

TBC - Raiding, Nagrand, Dalies

WotLK - Leveling and story/As well as great level design

Cata - Transmorg... (Cant think of anything good about this expansion, considering I also quit 6 months into it)

MoP - So far its the storylines too and the level design, it does feel like WotLK again in a good way.

[Drfireburns]

TBC - Raiding and not being stuck to just one set spec for a class.

WotLK - Story with Arthas and more opening of classes/specs.

Cata - Uh...

MoP- Questing, storylines and overall presentation of the Horde Vs. Alliance.

[Anjerith]

tBC - Reduction to 25 man raids, this probably saved the game from stagnating and drifting off very early in life.
WotLK - Introduction of Achievements, beautiful ending to a long-standing storyline in the lore.
Cata - Huge revamp of the old world.
MoP - Wonderful combination of many of the best aspects of the older expansions.

[Thage]

BC: Flying mounts
Wrath: Argent Crusade-centric storyline
Cata: Goblins/LFR
MoP: EVERYTHING

[Deleted]

WoW: Fangasm cuz of warcraft rts series.
TBC: Nagrand + Illidan
Wotlk: Lich King - best story arc ever (so far, in warcraft universe) + LFD
Cataclysm: Goblins + LFR
MoP: Panda's + Chen + The theme is very appealing in terms of honor etc... (see panda's) + challenge mode's (although it needs more adjustments)

[Deleted]

When did we get haircuts..? lol

[Daverid]

TBC - The whole of Outland
WOTLK - Ulduar
Cataclysm - Transmogrification
MOP - MUSIC!

I would love to add so much more onto the MOP section (As well as a couple of extra things in TBC/WOTLK) but I shall abide by the 'One Thing'.

[GeordieMagpie]

BC- ..I'm sorry but, everything.
WOTLK-Story
Cata-Transmog
Pandaria-BoA Mounts

however I..unfortunately haven't tried Pandaria, not sure if my time with WoW is over..damn, 6 years of amazing game (Cata wasn't really amazing but it was good.)

[dannyduh]

BC: Flying mounts
Wotlk: The amazing continent that was Northrend
Cata: Old World Revamp
MoP: Too early to tell but for now the new talent system

[Cirque]

TBC: Flying Mounts
Wrath: DKs
Cata: LFR
MoP: Questing

Think i'm actually thinking the same, here, except perhaps MoP's best feature yet as far as I'm concerned has to be monks. I like LFR as a timekiller and it's a good thing for a lot of people (but not for me specifically).

[Biggayshammy]

Classic: didnt play
BC: Hyjal
WOTLK: story
Cata: it finally ended
Mists: Its so damn beautiful