I love the pestilence set for it's potential, but other than farming Dragons Breaths at low level, this has been the only other build that has worked well. Let me know if you know of any, or thoughts on the build..
I think the 4 piece and 6 piece Pestilence set bonuses are useless at the moment. All I've tried (and enjoyed) is a 2 piece Pestilence build for DB farming... someone called me out on that for it "not being a Pestilence build" but whatever - what I like mot about it that it's great for lazy farming as the Corpse Lance is shot automatically at everything around you ;-)
I agree that it feels underrated for what it is supposed to be. However, the 6 piece in that build I linked does some good work and I would recommend it as it is actually quite fun and feels to be viable in the future..