Since the subway scare earlier this week about subways possibly getting removed, and then clarified that they will just get overhauled and not exist in their current form, I had a few suggestions for some changes to the subway.
1. Change the layout more along the lines of what most city subways looks like with a couple of different lines that go back and forth along a set route, rather than the round robin approach; with a major or a couple transfer stations. Something more like this maybe (just a thought), GFJ seems like a logical place for a junction.
2. Change the boarding fee to a lower flat fee of like 20 or 25 currants, and charge maybe 5 or 10 currants based on how many stops you go from the station you bought your ticket in, so longer trip might cost a few more currants.
3. Lower the 60 second wait for when there aren't 3 glitches riding. Most subways in major cities do not wait very long at stops especially during off peak hours, only a couple minutes. 60seconds of wait is the ingame equivalent of 6 minutes, which is too long. Maybe a 2-3 minute wait which would be 20-30 seconds, 20 seconds would be more realistic.
This would also make it more easily expandable as new areas are added, unlike the closed loop it is now.