TL;DR
Allow train stops on curved or diagonal rails for more compact station designs.What ?
Currently, train stops can only be built on straight rails.It would be nice if train stops would offer more alternatives for station designs, e. g. a station like this:
Why ?
A train station that branches off a main line takes up a lot of space.An alternative in the current game is to re-route the main line and make the station on the straight section.
In Factorio, trains don't slow down in corners, which makes this practical. But it looks completely unrealistic.