I am just not completely convinced that the Klingons are purely a Norse/Japanese Samurai culture. It does appear that way in Enterprise and the TNG but not the case in the TOS.
Oh, definitely. It wasn't until TNG that the writers began using Norse and samurai models for writing the Klingons. The TOS Klingons were a cross between space Mongols in appearance and behavior and space Soviets from a political standpoint -- or rather, the '60s American TV stereotypes of Mongols and Soviets.