Thanks for all of your answers. I was wondering if it was worth trying to get a seminar in the New England area with a somewhat unknown yet truly skilled master. The person teaching would be a master with excellent credentials and lineage whose Hung Gar skills and knowledge are right in line with those who are more famous. I prefer to keep this person's name unknown for now.
I think PM is right about seminars. TT also. You need to be able to take something home to make it a good value. Something you would not have learned from your own school. The seminar should also build upon what you already know. I don't believe you should teach drills or anything else you can get from your own teacher/school which is why I asked. But what is it that you cannot get at your own school? Kind of like asking what is it that you don't know? How do you know what you don't know? Have you ever wondered how much you know is taught at other schools?
Also, there is a wide range of students. How do you teach all of them at the same seminar?