We didn’t have god damn tunnels in CS1 when it was released and people were raging about the city being limited to 9 tiles.

If company admitted performance issues before release is the hill that these people are willing to die on, well go ahead then. Back then the alternative was either cities platinum series or the abomination sim city became and neither of those was any good. At least now you have something more modern than sim city 4 to fall back on if CS2 disappoints.

Consider geotastic