TheTigerMaster
Superstar
TTC logic right here.
I think a great amount of forethought was used when building the Yonge subway. When Yonge first opened, it used 4 car trainsets and the individual cars were significantly shorter than the T1 cars we use today. But they designed the platforms to be much longer than what was needed at the time. They're long enough to hold T1/TR trainsets of 7 cars, which I estimate are about twice as long as the 4 car G-series trainsets used when Yonge first opened. Also, tunnels were built wide enough to accommodate trains that were far wider than what is used in almost all modern metros today and almost certainly wider than any other metro back in the 40s. The result of this forethought is that we can now run some of the widest and longest trainsets used on any metro in the world.
Anyways, I think it's a little ridiculous to blame poor logic on the small downtown station sizes compared to our newer stations. There's no way that the designers back in the 1940s could have known how much they'd be used nearly a century later.