Make more Dungeon Paths
Yep.
As the original dungeons existed primarily to tell the story of Destiny’s Edge’s reunion tour, I imagine any new dungeons would exist primarily to advance the Living Story which is about the Destiny’s Edge B-Team.
I think it is also more likely that we’ll see additional Fractal stages rather than dungeons/paths.
If a new standard dungeon is added it is likely to be like the TA aetherblade path: perfectly reasonable dungeon but too much effort for the same reward as the other paths. The speed running of the old dungeons make it hard to envisage a new dungeon that can compete for time vs reward (unless it has similar design mistakes to the older dungeons).
If new dungeons come in I think they will need to offer new game play, new challenges, new rewards, and not be a direct alternative to the existing dungeons.