In my opinion you can only see the % amount versus random good when you do 100+ items.

But when do you do such a large amount of crafting? I only when I got a huge amount of low level normal ingredients.
Luck stays luck, an increase % like from 30 to 70 does increase it, in the end it is still about luck.

I do understand the frustration a lot, it made me stop leveling crafting, and only focus on supply missions.

Do I want to change it? No, I am no real crafter, I just want all classes to 50. So now with supply missions I will get there, but it will take much longer.
Give a better succes rate, and I would level all crafting classes so much faster. Which I don't deserve, in my honest opinion.

With atma I want to keep this random thing. I don't want guaranteed win, this is about patience and the will to go on.
While very frustrating, I don't want it to change. I am still busy with it myself, but I really would hate it if they made it easier.