First of all, thank you for this article but with due respect, there are several flaws in it and the result leaves quite a large room for improvements, suggest you follow Jeff's advice and post fully consumable examples in the resource section. Without a tangible example of the data, one cannot but speculate on it and that in itself is not a good practice. 
😎
Just as a starter, the reversed engineered XSDs from the SSIS data source are appallingly bad and should never be used but for the simplest of naive XML schema.