There has to be an alternative to M6. Not all of us have the RNG gods' favor to get every piece or a kridershot. If the current trend of M6 or bust exists for T6, I guarantee the set will be nerfed to hell... especially if they were willing to nerf punishment. I don't want that to happen and I doubt anyone else does. A set specializing in hatred generation could easily compete with M6 and offer many potential builds.
Can DH's expect no real changes to hatred generators in 2.1?