What they need to do, is have a skill handicap for each masterbook recipe.

One recipe you can't use steady hand. Find an alternative skillset such as observe > Focused touch/synth
Another one you can't use manipulation. Use an alternative such as master's mend
Another one you can't use comfort zone. Alternative will be trick's of the trade.


Basically something that makes you approach each recipe differently. Didn't the Ixal beast tribes have some sort of handicap? Can't remember if it was skill or stat...

Let the progression crafting be as easy as is so that people can train their skills and level crafters.
I feel this will cater to all types of crafters.