Not to make light of this because this is really great as it is.
But it proves out cities could also be fed to us as a list.
And that list could have production times.
For example:
"Planks Manufactory;lvl23;=1:23;(etc)
Golden Abyss;lvl18;=2:54;(....)
Barracks;lvl30;=1:17;(...)"
where "=#:##" is the countdown to finishing the current progress
by converting these to clock times, we could see at a glance, "Oh, if I want to be current in my completions, I need to be online at (example) 3:17 pm, 3:23 pm, and again at 4:54 pm.
This would significantly cut down our hangout time and allow more time for RL without compromising the game in any way.