The principle followed by Mahāprabhu as delineated by Sri Caitanya Mahāprabhu in his conversations with Ramananda Roy is to come to the essence.
We are not discarding the Varna Ashram system and its true worth , the gradual developmental process of association and training by the intelligentsia in all their various capacities are an essential element of the development of Krishna consciousness .There are cor and peripheral elements to Krishna consciousness. 1st class devotees, 2nd class, and 3rd class devotees are always situated in the world in every culture.
But what Sri Caitanya Mahāprabhu has given society is the essence of love of God .
No mater what your external circumstances by Nama Sankirtana chanted with sincere purposes, one can aquire love of God immediately. However, a top-class Brahminical man , although externally knowing sastra and the formalities of cultures, may or may not aquire what Mahāprabhu has given , depending on a state of humility of the heart . Bhakti is in the hands of those pure devotees who have it , and they bestow it. Thus, causless mercy , mercy above justice is an important principle demonstrated by Sri Caitanya Mahāprabhu and Nityananda prabhu.