No please go ahead tell me why the expansion was bad without talking about Dragon Soul.
T11 was one of the greatest tiers of all time
The Entire world got redone ALOT OF ZONES and the new zones are probably still the largest zones we ever had gotten.
T12 Firelands and it's daily hub were praised and Ragnaros H is one of the greatest boss encounters of all time.
The Heroics that launched with Cata stand out as some of the most interesting ones made.
Loot wasnt a mass RNG fest and you could work towards goals with rep or Valor for other gear.
So tell me what was bad.