but for the stone, i'd actually find it more consistent if each tile would yeald atleast a brick and some would yeald a boulder with the skill of the miner slightly improving the chances of getting a boulder.
The issue is item clutter when digging out areas.
oh, didn't think about that...
but if each wall needs 4 bricks anyway, it might be used for craftign and building already.
whenever i make a huge surface defense, i need lots of stone for it and after i lay out my plans, i start digging to find out what material i can use for it all.
there's always ways of getting rid of surplus stone.
idea: new type of possible contract with human settlements to supply them with a certain amount of bricks.