Do you mean like this in Sao Paulo?
In Miami, the platform roof does extend over the vehicle as well
in DC, the roof doesnt extend the entire platform, but where it does, it extends over the rail vehicle
So I'll jump in on this. Cool photos, but one thing in common that rules out overhanging anything are that all of these photos have third rail power... Last I checked the GLX is using overhead power...
I'll go ahead and doxx where I am living at the moment, but the attached photos show that the U-Bahn running with the third rail is covered quite well. On the other hand, the platform at Neuperlach Süd for the S-Bahn does not overhang and makes the platform a nightmare in the snow. I know, because I fell on my ass there last week.
Maybe one can hope that they will put some covered bus shelters that at least have three walls and a roof on the platform. They have some glass walls at the station, but it does a shit job at stopping the wind. You can most likely see them in the photos that I took.
As for the homeless issue, it's a catch-22... I would love to see the homeless issue tackled in Massachusetts and the USA for that matter, but we can't let that be the roadblock here. I also think that what the UK did in putting spikes on places that people sleep rough is abhorrent and ideas like that can get fucked. I propose seating that uses individual seats, spaced 18 inches apart, with armrests. Something like that would also be a bit helpful for the next pandemic, with built-in social distancing, whenever that happens (hopefully not for many, many years.) It's not a perfect solution, but make it uncomfortable if not impossible to sleep there, and then once we have this built, let's work on the homelessness issue.