Thunderbrd
C2C War Dog
Doing this also reduces the strategic layers and writes entire unit lines out of perspective in the game further so it is not the plan at all. However, it IS somewhat the plan that after you get a stage or two out from the home planet, like into galactic, that most communities will be represented in this way. There will still be a few other special places of importance that get down to this degree of specificity, but most won't. You might have a home planet of another important species or two that might, a special hunting planet or two and so on.When multimaps are introduced, I'd think it makes sense that your earth map will be transformed into one "city" once you build the Ecumenopolis.
Aside from maintaining the nurturing of the garden of cities you began with from the beginning as something you do all the way through the entire tech tree so as to show the ground level experience at every stage, another thing it will do by being a more detailed example of what a zone can produce as a whole is give us a sense of comparison for what the mega cities such as planetary, solar system, and galactic analogous colonies should have as far as yield and commerce and resource outputs as a rule.