Uhmm, I just wanna sugest, to show the chances of failing/or success during creating and refining.. It could help to think wisely before refining and creating.. rather than losing all the hard work per day grind/ cash wasted on market's MCGs.
There is an old ref chart somewhere, crafting chart won't happen unless some saint does it and shares with the rest of us
I guess it's not that hard to implement. People would give up on doing stuff if they see the rates, though.