"As an Administrator, I want to define a class of Client Developers and assign them a rate limit, so I can have different limits for different classes."
This makes managing rate limits much much easier.
For MVP, our rate limit classes will be:
Default rate limit class: 5000 API calls/hour per client ID/user ID pair (with null user ID counting as a pair here)
Preferred rate limit class: 25,000 API calls/hour per client ID/user ID pair
Internal rate limit class: 100,000 API calls/hour per client ID/user ID pair