Can we please buy wild sets?

I didn't get serious about hearthstone until Whispers of The Old Gods came out, as a result I have very few cards from GvG and TgT, and I never got to play Naxxramas. I think it would be awesome if we could get some sort of value deal on wild sets. Either making wild cards cheaper to craft, making entire wild sets purchasable with gold or real money (not packs, but actually getting the complete set), or some other method that doesn't involve me dropping 1600 dust to play Justicar in wild once in a blue moon when it's already so difficult to keep up with new standard cards. And most importantly I just wanna play Naxx man :( Being able to explore a "vintage" hearthstone that I never got to experience would be almost as exciting as a completely new expansion to me!