So i'm looking at upgrading my DE Drill to level 5.
That takes 6 days to do, where I earn 0 DE from it during that period.
That's 8640 DE I lose out on, all for an extra 20 DE/hr.
It will take 18 days for it to pay itself off to cover those losses.
Does it make sense that the drills don't earn anything during upgrade times? Not only does it cost 6mil elixir, it's going to be worthless for 24 days (6 days upgrade + 18 days to recover losses from upgrade).

