I would like mini motorways but for pedestrians

[ElTejon]

You could use a modern city and the goal would be to take away streets and add public transportation and multi-modal systems to get more people to their destinations. Kinda like mini metro, but with walking paths too. Would that appeal to anyone else?

[Tsubame ⭐]

If you are only taking roads out, then this would be too similar to Mini Metro, and there would be not much point of doing a whole new game based on that.

If you have the ability to place roads, then you would require a game with elements of both existing ones, and again would be too similar to both.

Feasibility aside, the idea is likely too complex considering both games are puzzle games rather than proper simulators/transport games where you can already do this.

Besides, it is not exactly common to take large stretches of roads out to build new transit lines in real life, either, hence new systems in urban areas tend to be underground or elevated. More common are the removal of specific buildings along the way.