What's the difference between the basic station and the interchange station? From the image provided in the issue, I think only a bigger switch could be used and enlarge the station icon if possible. Another point is if facilities icon are not added, create a new issue and link this one with the unfinished part :)
Only the radius and color are different (the color in the interchange station is fixed).
Only the radius and color are different (the color in the interchange station is fixed).