Don't get me wrong, polarizing matchups are bad, but CARD negation, rather than deck negation is what I want.

For example, an anti kingsbane card shuts down Kings bane, not the deck explicitly. The fact that the deck is totally dependent on that one card is more a function of combo decks currently exploiting hearthstones lack of proactive interference. In a world with real hate options, you wouldn't be able to get away with that at a meta-viable level. Print an anti Reno card, i.e. dirty rat, and Reno decks may be hurt, but they'll still function.

These ultra fragile decks are what need to go, especially when they are the ones with hyper polarized matchups themselves.