The network analysis tool often generates networks where the track segments do not always meet at endpoints (e.g., one segment "T"s into the middle of another). This makes constructing composite tracks with the profile tool quite difficult: one must first identify all such intersections by hand, break them with the cut tool, and fix the ends so that they are in proximity again. It would be nice if TF could automate this process, so that all segments are manifold.
As an adjunct to this, it would be nice if TF could automatically split segments into separate files. This would make it easier to copy parts of one network into another. One simple approach would be to save each segment in a file named according to the source file and that segment's terminal waypoints.