Yeah, figured it had something to do with that. As the only necro in my group that used deathly chill it was fine as it was, but I can see how multiples running into each other would cause problems.
It's just lame that something unique to the class and spec had to disappear. But it was obviously something that wasn't supposed to be there in the first place.
It makes Reaper only slightly more attractive than Soul Reaping for a condition build and that's mostly because it adds a useful Shroud. At least there's a handy golem to beat up and figure it out on now.