Currently we are working on AEM 6.5.2 which is host on the new Cloud but is not configure as Adobe Experience Manager Assets as a Cloud Service (so to upload images we use the Upload Workflow). We have the Scene7 mode (not Hybrid).
We use Image Preset in order to configure the Dynamic Renditions that are created every time we upload an asset.
So every time we upload an asset the file is published to Scene7.
If we upload a GIF then the file is publish to /is/image/ and is convert to static file. It is possible to configure this to be publish in /is/content/ when MIME type is GIF?