Quote Originally Posted by Briga View Post
ZA only has one new boss, the others are all old.
ZG, has the return of Mandokir and Zin'do.

Cata, had Nefarian, Onyxia, Ragnaros and Geddon all return from the dead.

Scholo still has Gandling and Barov.
SM, Still has Whitmane.

I'd say all of those named could have been replaced with new bosses and should have.
I'll give you ZA, they just updating most of the bosses in that instance with little lore reasoning.
However, in ZG both returning bosses came back in new bodies and their fights were completely different then before.

Nefarian and Onyxia came back because Deathwing resurrected his son, who turn Onyxia into an undead. Both (were in same fight) had completely different fights.
ragnaros and Geddon are elementals, they don't stay dead.

In Scholomance, Grandling I believe was explained in the questline in Battle for Andorhal and Barov is a spirit. Both have new fights.
For SM, I do not know the reasoning for Whitemane's returning, but I believe the fight is different.

So it seems, only ZA was rehashed, because the definition of rehasing is basically copy pasting.

---------- Post added 2013-02-20 at 05:10 PM ----------

Quote Originally Posted by killidan View Post
I did not list Troll heroics.
I did not quote you. Learn to know who is speaking to you.