In lack of an arranger-type native solution, I guess a simple song marker tool might be a quick fix? Maybe hotkeys to insert a marker at current sequence position&line, keys to move to next/previous marker, and a gui to select marker from list and to manage them (remove/rename etc…)
That wouldn’t seem like a huge effort… Keeping them updated regarding adding/removing patterns from sequence might prove to be the biggest obstacle, if that’s an essential feature.
Actually, I found this. Seems a bit old, but could be something to build upon… 