The Truth Siren:
Normal is right where it should be in difficulty. Heroic should be increased slightly in difficulty.
BC grew in sub numbers more than any other period in wow. Not convenient enough for your sorry argument? Too bad,so sad! With the arterial bleed of subs the fastest it's ever been, it shows that no matter how easy things get, it isn't enough to keep people.
Each spec has at least 1 spell that should be affected. For affliction it'll be RoF, Demo'll probably get soulfire and maybe even immo aura and destro will see the most significant change. Quit trying to compromise the integrity of the affliction spec to get green fire, we have options without messing with the flavor.
When Dalaran is ashes, mage, you have my permission to die.