Ok, my 2 cents with which I will try to stay on topic...
There should be lower tier legendary items which drop from randoms. Not particularly fun items like pink,
but some with only slightly better stats like craftables, simply to higher variety and create a price segment
between high tier legendaries and craftables. Bosses imo only drop materials as there aren't enough coming
from in between the waves, so modifying the dropchances for materials accordingly and taking those away
from bosses is a step into the right direction.
Also it is pretty easy to see where the problems lay when taking a look at the auction hall which works like
a sensor for it. The higher the price, the scarser the mat drops for a certain material. If you compare it to the
crafting recipes, you get a clue whether it would make sense to adjust dropchances accordingly. When was the
last tome crafted, when the last barrel...?
Thank you, Winter! Since your "retiree" tag is gone, I finally have the feeling that things start moving again.
That is definitely a good thing!