I think this is an amazing idea and have been waiting for this for some time.
My 2 cents:
Have reading materials/online materials for reading and writing of a theory portion of the certification. Have a 2-4 day practical portion for certification.
The various levels could start with more applications to sport and progress to track specific, all the way up to the elite level.
To make this certification worth while, you would have to make the certification material standout from the web site and existing materials. So, a person should be able to learn more from the certification than through the website. Maybe a standardized assessment protocol from technical checkpoints to timing elements.
Very exciting