So what if some crafted gear bits are "BiS" from time to time? Besides no "BiS" set including i110 with melds exclusively, those pieces cost a ton of money that isn't available to the majority of players. (Furthermore, the attention put on "BiS" is profoundly disproportionate to its usefulness. The variance of player skill and even DPS loss from random mechanic elements is significantly more than the difference between any accuracy-capped set at similar ilvl)

Crafted gear simply hasn't supplanted the coil drops or discouraged people from attempting it. Good crafted gear enables more participation: It gives people some options when they don't get the drops they need. Like healers/DPS with vit on a i110 ring to survive later coil. Or opens up new ways to think about a class like tanks with hybrid strength. If you have weaker DPS but good healing that's a tradeoff tanks should be able to make.