I do think some activities need a bit of adjustment in regards to stamina usage.
Fishing regenerates at a rate that's way faster than the stamina regens at, so less stamina should be used, since we can't switch out fishing wolf around for 24 hours.
Mining also takes a good chunk of time, and if we only get up to 25 slots, I think it should cost less as well to account for all the time and stamina used going back and forth between the smelter and the place you're digging at.