One more question about salvo.
How the same LoS interacts with stuff like Jaina's Light, Cracken, EWS, etc.?
For Jaina's, for example, the LoS could go through an obstacle even when her attack is not obstructed. Salvo copy the LoS, not the obstruction/clear status so I guess that as long as the LoS go through an obstacle the salvo is obstructed unless I'm Jaina's myself.
For cards that grant obstruction under certain circumstances I guess it works the same. Cracken has got a clear shot at speed 3 but when he is attacked back he benefits from his ability. Otherwise he would be shot obstructed all the time but when he is "salvoed".