Hell hounds have been buffed and are now immune to snares. Patriarchs behave in the way hounds used to. Which is to say, they run rather fast. I've been killing 4 of the Fire turtle hatchlings, and one Patriarch that can be pulled from the side of the road. I've gotten 3 Blacksmithing patterns and 1 tailoring pattern in two days. As well as the usual epics.. Ranseur, trinkets etc.
It's only 5 mobs, but still very doable. As for the patriarchs, you have to keep them perma dazed / snared, or they'll eat you up.