Honestly, I would glad to pay US$60,00 for a Dread Necromancer DLC
I was with you until here. I'm not willing to pay full price for classes as DLC no way no how. Please do not even joke about this.
I would cuz I love necromancy.
And honestly, the argument that it would require a lot of work is not truth. Most dread necromancer spells already are implemented on wizard/cleric and I an pretty sure that Auras and other things already are implemented on enemies. The unique hard thing to implement is the lich apotheosis at lv 20 which is not a problem since the game will not reach lv 20.
Sorcerer requires way more things, due spell points and other things.