One school of thought when it comes to curriculum design is that they have a distinct beginning and end. That said, does that apply to your martial art? If so, do you know the whole system? If not, can you learn the entire system?
In my experience, usually after 5th dan, there isn't much new material to be taught. There are exceptions, but those usually revolve around how one varies the material being taught. A good example is my jujutsu system, you can learn all of the lists in about ten years, but you can work out variations for your entire life. Technically, you have learned the whole system, but about application as time goes on.
In my experience, usually after 5th dan, there isn't much new material to be taught. There are exceptions, but those usually revolve around how one varies the material being taught. A good example is my jujutsu system, you can learn all of the lists in about ten years, but you can work out variations for your entire life. Technically, you have learned the whole system, but about application as time goes on.