https://dailyhive.com/vancouver/skytrain-oakridge-41st-avenue-station-upgrade-design-renderings
Despite the absurd cost-cutting measures, the Canada+Line still could have been designed & built to eventually have 152m long stations, like the Montreal Metro. However, Vancouver & BC are all about inadequate or congestive infrastructure. Planning for a future high capacity train line goes against the backward BC mentality. Thus, all of the underground train stations are shorter than those in Edmonton, Seattle, Toronto & Montreal. Having proper big city long stations isn't a problem for real cities, but Vancouver wants to be more like a false front or a movie set.
https://thecanadaline.com/station-guides/oakridge-41st
LA & SF have their versions of a C-Train or an Edmonton LRT, but they also have proper big city size subway stations & trains.
The entire SkyTrain-and-Canada+Line should have been built with a provision to eventually have 172m long stations, or at least 152m. While the elevated stations could somewhat be lengthened, it's much more difficult & costly for the underground stations. Had they already been roughed out, it would have just been a matter of eventually completing them.
https://www.google.com/maps/place/Oakridge-41st+Avenue The edge of the ridiculousley short train platform. This joke of a train really should have been designed to eventually accomodate 8-10 car trains. However, that would go against the multi-generational, KEEP THINGS SMALL OR BACKWARDS IN BC mentality. Apparently, even having 4-6 car trains would be too symbolic of recognizing urban transportation growth in backwater BC. Thus, a 2 car joke of a train, which can eventually become a 2.5 car train, was decided to be enough.
https://www.google.com/maps/place/Oakridge-41st+Avenue At least some of the absurdly short underground stations are level enough to potentially be doubled in length, but not tripled.