1st request is: ability to set connecting direction of reroute nodes, here is small workaround im using ,to explain when it could be used
it may not cost work that could be needed, but would be likable to see it implemented.
2: adding 2nd node texture to use when connecting direction is reversed ,to display flow correctly
(not best example for 1st request, if range from source more ,its much worse (without workaround the connection can go trough half of graph on right))