I live in Canada and getting my instructors rating renewed would be a very big issue as I would have to jump through all the hoops again which I have no intention of doing.
As to my not being able to do any instructing without an instructors rating that is not true as I can do such things as type ratings without an instructors rating to name one thing.
I am licensed to do type ratings in Canada, Australia, and under JAR so what am I then if not an instructor?
Maybe a teacher?