Following on from discussions earlier this week about a possible future Metro for Auckland, I have got drawing with Photoshop! This is only the Auckland City part of the East-West Metro and would certainly be built much later than the Manukau City part (which follows the alignment in this post).
The outcome is below:
For a much more zoomed in version click here.
Blue sections may be able to be built above ground, red sections would probably need to be underground. 17 stations in all I think.