Crafting after 1.21 is so much better. A lot more feeling of control and consistency with each of the 3 synthesis actions having a use. The control over HQ rate is also nice.

Most of all there's the degree to which Quality effects experience - it's been buffed to an amazing degree. I've gotten 2.3k xp from a levequest synth with rested bonus and no scroll. Doubling/Tripling your xp gain by paying more attention to the synthesis and making smart use of your skills, which are now readily available, pays off very nicely.

The difference between crafting now and before 1.21 is night and day.