Great game, but the interface needs improvements to help management. First, add tooltips in the job assignment screen(icons are too similar).
Also add a production report where you can see all your total and net income (requirements would be nice too).
Add some way to find/count all buildings of the same type.
When trying to "upgrade all", calculate necessary resource and give warnings: actually it just upgrades some buildings and there no visual way to tell them (which is also something I'd like to see).
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Thanks for all your suggestions, most of these are planned!