yes fususoos you hit the nail on the head. Pas anfaas is just one of the azkaar and ashgaal prescribed by the sufiya. The point is instead of pas anfaas, why don't we all recommend zikr qalib, or some muraqabah or something else...like habs dams or habs nafi etc. The point is each of these azkaar are medicine for the seeker and the dr (shaykh) has to prescribe it. Also who said the maqsood is opening up the lataif. What will you say to imam sirhindi who gave khilafat to a person on the first latifah?