>>302085773
Last time I tried a Blend directly it was still a prefab, and it was a little fucky on reloading it with changes in Unity.

Guess what I could try and working on each mesh indepedently, link in my room scene so I can get the scale correct, then apply scale/rotation and export FBX. None of these workflow options seem nice. Ideally there'd be a plugin for both programs and you can just do changes on one thing and it updates in realtime when you tab back to Unity.