Blender Render is going away by the end of this year.
Which means, by the end of the year, Blender will no longer be usable for High Fidelity for anything other than static props (through the unfinished GLTF support). No more avatars, no more animations.
We need complete, full support for the GLTF format to solve this problem. At the moment High Fidelity only supports static GLTF. Not animated or rigged.
An overwhelming percentage of your users are Blender users, High Fidelity. I don’t know about everyone else, but I personally am not going to stick to an older version of Blender just so I can continue to create for this platform. We shouldn’t have to.