Iain posting his new kata — which I'm sure will be a series given the name ;) — reminded me to get round to asking this on the forum. Have you encountered "Amidasu" before?
Amidasu (to think through / to puzzle out) is a 'kata' that is created and developed by a Dan-grade student for their next Dan. In our dojo (practising Shūkōkai) it is for a 2nd Dan taking 3rd.
They are required to start and develop the kata over several years, experimenting with bunkai & what they personally want to include. As a part of their grading they are asked to perform their Amidasu & demonstrate the intricacies of its bunkai, their reasoning behind each move and discuss elements of the kata when criticised. If they pass, they are then they are allowed to name it.
I'm certain everyone here has toyed with creating their own kata, but I don't know if other schools have formalised this as much as Amidasu? I'm interested in hearing people's experiences with this 'kata', whether it is also called Amidasu, or if it is refered to with another name.