I believe that the mason class needs more use… perhaps by making it required to build anything (including buildings) out of stone by requiring them to be made from stone bricks (which currently have absolutely no use at all)
Then you wouldnt have to do something silly like make stone spoons for the cook just to make people use mason (which they will probably just use it to make the spoon then immediately switch their job because mason just isnt very useful outside of decoration)
However if the mason was required to build stone buildings and they made it so buildings could be destroyed with stone buildings being harder to destroy the mason might actually be very useful (especially for things like castles/castle walls)