As somone else has been saying who knows what the population of the greater North Shore could be in 20 years. Looking back from 2044, it could be very dumb to pull down NHS now (still only 30 years old?), the only sizeable stadium in the area.
https://www.stuff.co.nz/sport/350218793/councillor-pushing-north-harbour-stadium-be-aucklands-test-cricket-venue
Holy crap, given that Colin Maiden Park (on a major train route) has accessibility issues, I don't know what you say about that windswept fortress up in Albania
"“I know people with expertise in cricket and they agree it would make a perfect test venue,” Watson said." - hahahaha, no he doesn't and no they didn't!
As for accessibility, that is and has always been based on 'from me'. Anyone on the Shore, such as myself, would tell you NHS is pretty easy to get to. Trains don't exist in our lives.