I had given up on Construction a while ago. It required too much clicking and cost two much. And I finally gave up on it completely, by getting rid of all of the planks and nails in my bank. Yay, more bank space!
I'm still fighting elves, and working on defence. But, since I got two clue scrolls in two days, maybe I'm actually mining clue scrolls? :) Which is fine, since I like treasure trails.