@OmarAlmonte - Please add the following gap to the issue tracker.
In all the List Endpoints there is no way you can sort the list by the Last Updated (Modification) Time.
This currently can be done in the XML-RPC and is useful when syncing the API data so that you can get the latest updated data first, without having to going through all the records to determine things.
Affiliates, Contacts, Opportunities, Orders, Notes, etc.