Re: Belt System Question.
I think we need some context here. As you say, the tradition in the yoshinkan is a bit different. But at one point in aikido the hakama was considered proper dress *period*. To not have it was basically training in your underwear. Modern times have a different view...after the war when it was difficult and expensive to get a hakama, the standards changed. Some groups like to go back to those halcyon times when everyone wore them.
There is nothing really wrong with that...it's just different from what we do. Understanding the differences and where they came from is what's important.