What would metro rail be like in Christchurch?

I was looking at the Auckland Light Rail project last week and that lead me to to thinking about what a Christchurch commuter rail network would look like.

Here is the Link to the Regional Rail project. https://www.greaterauckland.org.nz/2022/07/04/regional-trains-and-electrification/

Once you get the system up and going, the lines replace bus lines.

00:00 Intro
02:00 Line Map (East West)
04:00 Northern Line
04:55 Amberley
06:25 How long are the lines?
07:00 Additional Tram Lines - Airport
09:00 Another Tram Line
09:40 It's better for Tourists
13:50 Tourism and Destinations
15:20 Round out the network
15:55 There's already a gondola!