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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
It could be debatable if the description didn't state neatly the contrary. Your suggestion is not a suggestion (what do you actually suggest?), and if the idea was to change the kata design, it won't be done since it would invalidate more than 50,000 submitted solutions.