Maybe too much independent? It looks like AWS had roughly zero collaboration between teams. I wonder how they even get IAM to work with all the services.
* Basic things like how you call pagination fields is f%cked up. https://gist.github.com/ilyash/f845d050df5c7c0805183790b28ac... . That precludes straightforward implementation of wrappers and what not.
* Code being published of quality which says (99% sure) it was never reviewed (at least not by someone proficient in programming and the language).
* CloudFormation lags supporting new features of other services.