hah, well.... about early game I was only replying to you about running and melee. I think stamina drain for mining is almost always a problem. Having to constantly pause and wait for stamina to refill while mining doesn't make good gameplay, IMO. It's more understandable, to me, to have to regen stamina after running or melee as long as the drain isn't too severe (which, early game, I think it is)
Motorized tools should have drain.... anyone thats used one in RL knows that