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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.
I agree with some of your points, but I also see "best practice" more on the concept level. I'm voting best practice for the approach & solution to the problem.
camelcase vs snake case is personal preference.
Doesn't seem so DRY