It seems to say that it turns your blast into a 60 ft line attack plus the effects of gust of wind? That's way better than Torrent which you get access to 5 levels later. I'd believe it more if it only caused the effects of gust of wind to the target of an ordinary blast but gust of wind has some effects that don't make sense as an attack roll and that's not what the text of gusting infusion implies. On the other hand gusting infusion is a substance infusion, which usually doesn't alter the shape of a blast. Any thoughts?