Lessons for Auckland?
Do not be afraid of Light Rail and also Light Rail is good for small intra suburb running as well as big trans-city running like Airport Lines.
Two of the four new tram lines are intra-suburb running – meaning the line runs within a single district rather than multiple districts. I can control individual line budgets meaning I can select capacity ranges from 75 to 210 passengers. As a comparison a bio-fuel bus holds 40 passengers while the bendy busses hold 130 and let off a pile of diesel fumes along the way. So rather clogging my nice new urban area up with smelly busses I can use smaller trams to move passengers around while stepping up capacity as demand increases.
Manukau City Centre and Manukau/Wiri would be a perfect example of such a Light Rail scheme that connects into a larger LRT scheme like the Southern Airport Line (Manukau to the Airport via Puhinui Station) or in Cities Skylines the two City Boulevard Lines connecting into the bigger trans-city lines.
The two bigger lines being the Thorton Interchange to City Centre Line and the Airport to City Centre LRT Line both which run through part of the City Boulevard Lines.
In this case these two bigger lines run through multiple districts and centres so using the big E-class tram that holds 210 passengers will be more viable (remember my biggest bus is only 130 passengers).
In the end there is no point building a nice new urban area for it only to be throttled by busses and cars. Local and inter-district routes need careful mapping out and in this case the trams were the ones that cut the mustard rather than the bus.
Also who would want their new government, shopping and residential district backed up with cars? No thanks!