I admit: I only worked on my DH so much because they turned out to be very useful in Zereth Mortis before flight was achievable. It became so fun that I continued with it and now he is at an ilvl I think is pretty good.
But if they end up sucking, then I may have to consider something else. Fury Warrior? My (sigh) BM Hunter? Who knows.
Now as for the Cache trinket: yeah it’s still bugged. It works sometimes, but not every time you want it to.