(August 12, 2014 at 7:50 pm)Napoléon Wrote: As for your workers, keep using them, the cost of the upgrade won't really hurt you as your economy should be growing all the time anyway and the benefits of having improved worker tiles far outweighs the very small cost of improving them.
I usually build a few workers early in the game and put them on auto-improve, and perhaps add some when I discover oil and uranium (as both are crucial to my strategy). I rarely find the need to micromanage them.