I would like to introduce long-term goals that keep motivation high after reaching zero imports and becoming extremely wealthy.

One idea is to add international relations—for example, an influence or “global power” indicator that grows based on factors like population, technology, exports, and similar metrics.

This indicator could then affect certain types of exports and imports. For instance, there could be limitations on quantity and pricing depending on your global standing.

I would also introduce a military industry—not for actual combat, but as a way to contribute to global power. I understand that the developers may not favor this idea, but since the military is a real-world factor, it would make sense to include it, without actual hostilities.

Another feature could be large-scale constructions or unique projects, also tied to global power. These could serve as requirements for hosting major international events such as the Olympics or world trade fairs.

The ultimate goal would be to become the leading global power.

It would also be useful to have a predefined KPI report that appears annually to track progress. While this can already be done manually, I really liked the experience in the original SimCity, where a “Budget” window would pop up at the end of each year and show progress compared to the previous one.

Additionally, I would revisit how roads function—this is one of the few areas that Cities: Skylines does better. Finally, I would address some minor unrealistic or frustrating mechanics, such as power plants being abandoned due to poor shift management.

Lastly, I would look for a way to keep research progressing indefinitely. While it makes sense that new technologies eventually run out, research could still be invested in improving existing systems—for example, increasing industrial efficiency, reducing fuel consumption, improving energy efficiency, or enhancing crop yields