Complex sentence: Members of Broad Ass, called Assers, have come and graduated but have had one thing in common since the reconstruction of the membership method: the shift from the usual sign-up process to a three-week application.
Split into simpler sentences: Members of BroadAss (the "Assers") have come and graduated but have had one thing in common since the reconstruction of the membership method. The shift from the usual sign-up process to a three-week application.