Re: On who should teach beginners
A 7th dan shihan teaches beginners class in our dojo.
I just realized that regardless if its beginners classes, for me, what seems to be basic techniques taught by a high ranking aikidoka isn't "basic" at all since you would see the intricacies of the techniques step by step if you've trained long enough.
That is why we should always take the opportunity to train with shihan as much as possible if he's teaching, beginners class. Even yudansha in our dojo don't realize what they're missing when they don't attend beginners class.