If you have ships or are buying warehouse resources and run out of space, you know how annoying it is. I suggest that you can go into the warehouse at each port and there be an option to auto-upgrade the warehouse (perhaps to a certain level) as you attempt to store goods in the port or buy them so you don't have to level it up trying to quickly stock up resources or whatever your task may be.
The part I need judgement on is if this feature is implemented, will you have to risk buying the level and getting low on gold or should there be a setting within this that could set a gold reserve to stop buying levels whenever it reaches and/or goes below a certain limit.
Feedback is appreciated
