Amazing news … very excited to see this in the wild … mad thanks for working on this team Epic whoop!
Some feedback and hopes and dreams (in order of importance). The same functionality as what Maya enjoys with Live Link would of course be amazing.
Otherwise:
- PRINCIPLED BSDF shader support (PBR is critical)
- PARTICLE SUPPORT so we can use Blender as an alternative/companion to Niagara (This would be truly amazing and make my life so much easier)
- NATIVE BLENDER SHADER support (Color Ramp, Math Nodes, Texture cords, Fresnel … drooling at the thought of this but we can “bake” to Principled BSDF in the meantime)
- Great ANIMATION support in general for custom bone rigs (my main character is a quadruped) I wont be using mannequin much this year. And when I do use rigify I almost always customize it by adding or deleting bones.
- PARTICLE SUPPORT for hair
- ALLEMBIC can currently be used to export FLUID/CLOTH static/locked simulations … it would be cool to do it all in one plugin
- QUIXEL Megascans support for export … I would much prefer to set up my scenes in Blender and then export them to Unreal as it’s faster for me. But quixel has some rather complex shader node set ups so see item no 3.
- OBJECT ORIGIN + World Origin for Meshes
[QUESTION] 
… why not use the new open source Pixar USD format? The industry seems to be heading that way.
Please release this on Github … I don’t care if it’s alpha/beta, I would love to get my hands on this and test it. Happy to do bug reporting too if it will help.