Currently one can chop/saw log quality up, spindle/loom up silk or bulk hammer/anvil up q10 metal into quality tools (or worse, higher quality metal to spiral it).
This needs to go as it needlessly inflates the qualities and allows to create endless amounts of high quality stuff from low end materials.
Tools and workstations should be a softcap to the created items instead of a factor in the quality of the stuff they're used to make.
While at it:
Tool wear (that decreases quality with use) would further trade by turning one set of tools for the world into a set of tools for the next weeks.