While I think it does create that dynamic, I don't think TIG requirement is necessarily the best way to do that. The same can be accomplished by simply making sure folks know that getting all the material doesn't mean they're almost ready to test.TIG gets people out of the "cramming for the next test" mentality and into the "honing the art for the sake of honing the art" mentality for a period, a mentality that people who are highly motivated to gain rank might rarely be in if they could test again and again as soon as they wanted solely on a crisp form and competent sparring.