This is kind of a silly request and really should go low on the totem pole (and heck I don't even know if this is the appropriate place for things like this) but I'd love to see things like L bends, corners, etc. that you could use to help design your station. You don't really need them because the Cross Connector really does everything you need, but that gives extra connection points and doesn't look as nice for some of the designs I was trying.
X4 is really fun though... been meaning to post feedback, too busy playing.
