Features:
* Make a better use of objects on the Flex side.
* Use RemoteObject - http://pyamf.org/wiki/RemoteObjectConfig
* Optimistic concurrency control.
* Integrate user authentication (credentials) on the Flex client and the GAE server - http://pyamf.org/browser/examples/trunk/authentication/Readme.txt
* Use the RESTful convention.
Study:
* python-rest - http://code.google.com/p/python-rest/
* Bloog (RESTful design) - http://bloog.billkatz.com/
* GAE SWF Project - http://gaeswf.appspot.com/
* http://aralbalkan.com/1307
* Ruby on Rails RIA SDK by Adobe - http://groups.google.com/group/adobe-rubyonrails-ria-sdk
* RubyAMF - http://code.google.com/p/rubyamf/
* RubyOnRailsRIASDKbyAdobe\RubyOnRailsRIASDKbyAdobe\samples\flex\flex_ror_sdk_issuetracker\Flex Source\flex_issuetracker