https://dailyhive.com/vancouver/tsawwassen-mills-mall-sold-central-walk
Not only should the Canada_Line been extended into Delta, there should have been a stop at this mall.
https://dailyhive.com/vancouver/tsawwassen-mills-congestion
https://viewpointvancouver.ca/2018/03/19/a-tale-of-two-different-bottom-linesmcarthur-glen-mall-at-yvr-tsawwassen-mills That's the difference when a mall is close to a rapid transit station.
https://viewpointvancouver.ca/2016/09/27/tsawwassen-mills-mega-mall-mega-staffing-problem
Just because the SkyTrain is not considered to be a heavy rail system, there still should have been a provision to eventually have 10 car trains. However, that's what a big city would do. Unfortunately, Greater Vancouver & BC are under the control of a multi-generational power-structure that is opposed to allowing large scale infrastructure.
https://en.wikipedia.org/wiki/SkyTrain_rolling_stock#Canada_Line_fleet Why have 10 car trains when you can just have 2 or 3 car trains? Its all about congestive planning.
At first if the objective is to run 50m short trains very frequently, but to not ultimately allow a provision for 153m long trains, is another example of inept BC planning.
