Nerfing something isn't going to solve anything, it never does. People will always use the most OP build they can find, unless they're a moron like me, and prefer paper characters.
Someone once suggested making Lifegivers an even 30 HP per level, which makes sense to me. If Lifegivers, toughness, and other tank perks were available to paper characters, maybe things would be a bit different... except paper characters would still die easily., regardless.