Now, I'm not saying it's worth the trouble, but if you folks could give Dominaria a cohesive identity without betraying its history, I'm sure you could find a way to return to Kamigawa, and have it feel reasonably like Kamigawa, without repeating its mistakes. You seem to have a knack for solving seemingly hopeless problems :)
Let me ask this question. We make a new Japanese-inspired world. We decide we want to call it Kamigawa 1000 years later. What absolutely has to be there otherwise we can’t call it Kamigawa?