Let's say the difficulty to acquire a specific item is based on a scale 1-10.
To get a specific really cool BP (say, "Uber BP of Facerolling") requires fighting an epic enemy with a 'raid' so difficulty 10 (makes it really rare, and hard to get)
To craft same BP would require mining the materials from nodes only found in specific areas in the veteran zones (so, difficulty 8 maybe? and an hour to harvest enough)
Then, you need to have the recipe (which they should add these) which adds a new "trait" to existing BPs, and it only drops out of group dungeons of high level (difficulty 8, one time only, kind of like motifs)
Next, you need the right gem to use that new trait, and it drops off enemies level 50, V6 (difficulty 8, but another half hour to an hour depending on drops)
And it has to be crafted at a specific blacksmith station found in the wilds (difficulty 8 to get to)
So, we can either do a raid (Diff 10, takes maybe a half hour) or craft it (Diff 8 (1 time), Diff 8, 8, 8 each time from then on, and takes around 2-2.5 hours to make as well)
They could tailor the requirements to do crafting, but could easily balance out so that crafting AND farming both equal out... my numbers are not perfect I am sure, but tweak it, make some materials harder to get, or put the forge in a difficulty 9 location, etc... there are ways to make crafting and farming equal.