I've recently started experimenting with blightcrafting, but noticed something odd along with a partner-in-crime; t5 blighted scales are suitably expensive, but unlike lower tiers do not allow techniques. Fixing/adding this feature would essentially open up a whole new tier of dragon crafting, with the added benefit of spicing up the requisite resource gathering- making it necessary to travel into the blight (over and over) to get the best possible gear. Right now, blight crafting t5 isn't worthwhile and I, personally, will be looking into trying to surpass my current t5 set with t4 scales.