Rosedale, by being completely open (as opposed to being a tunnel portal) has the wind and rain in its favour. It's the stations that catch the wind and have no way of exhausting the filth that concentrate the grime.Summerhill Station is scheduled for accessibility (elevators) by 2023. Rosedale Station is scheduled for 2024. Rosedale Station is an open-to-the-
Rosedale looks really good as it is, I'd forgotten the smaller mosaic tiles there. Why spend money where it's not needed? There's many stations that desperately need TLC. I have respect and appreciation for the simplicity and clean lines of Rosedale. Hopefully it will stay that way for some time yet, like a Harris Tweed with jeans, it's timeless.
And note that Rosedale has a white ceiling! I forget when that was last reno'd. I remember it, I was living on the edge of "The Village" then, some forty years ago.