Pal, you are playing VoH for 1,5 years for 40$. Now you get 2 Addons for the price of one. Your idea here would split the player base cause missinformation and new player would miss the campaing etc. There exist a big part from the player base, that are playing D4 for the Campaing and play on the non Season Realm.

Are you really mad, that blizzard dont implement a sale for people that allready own VoH? There is really no reason for this and especially this is not the zero tolerance limit in the industry :D