I believe I am not alone in being frustrated with the development pipeline. Recently I was told I was trying to use the old way of adding a wearable to the HiFi marketplace. I followed the online documentation for this.
Please edit ALL the online documentation before making sweeping changes.
Please add support for GLTF for importing all assets, avatars, ect… If you are going to start using JSON files then you might as well make the effort to support GLTF for the creation of all worlds, assets and avatars. My second feature request is to make Three.js or Babylone.js availabe libraries for scripting within HiFi. Both these options would make life incredible good for developers in HiFi.