I am guessing blood tendrils or even taking 1-2-3 hits of damage into a defender into revenge might be really good for t92 armor's set effect for dps.
EDIT: "slayer or reaper task" sounds weird. If I had a solak reaper, would it degrade to blightbounds/manifests? Just sound's odd to code in general.
50% more up time is good. Wish it was 100% more uptime and just gave the 100% more up time to t92 armor along with set effect. I find the reaper/slayer task pretty meh and not good design. t92 armor with slayer is not what many people will do at all, and having it on reaper encourages dailyscape of doing reapers everyday and people might not boss because they don't have a reaper for that boss if this were to continue.
It's just the fact t92 armor is not big dps increase as weapons/rings/amulets/etc. (face value stats, we'll c how the set effect works with revenge) I don't see why you are so afraid of making it less expensive to use. You are afraid of the armor ...