I've become very interested in Iaido recently and it seems a vast and complex subject. I wondered how Zen Nippon Kendo Renmei Iaido was viewed in the world of Iaido and Koryu arts? As I understand it Zen Nippon Kendo Renmei Iaido is a modern Iaido style (the later kata only being added in 2000) made by combining elements from older Koryu styles of Iaido (Musō Jikiden Eishin-ryū, Musō Shinden-ryū etc) into some sort of "standard" for people that do Kendo? Because of this is it viewed as somehow lesser by practitioners of older or more "authentic" Iaido styles? Is it seen as watered down perhaps? Or seen as just as worthy as other Koryu styles? There are two clubs near me, one does Zen Nippon Kendo Renmei Iaido while the other does Hasegawa Eishin Ryu. Quality of instruction aside would the Hasegawa Eishin Ryu club be seen as closer to authentic Iaido than the one that does ZNKRI?