Request for nested prefabs: Revit to Unity

Hi, I'm using Reflect (Develop) to get my Revit model to Unity. In Unity, I intent to make some small changes manually, like light settings. Other changes I'd like to do as a batch, like hiding doors when the main camera is near. However I'm hitting some obstacles on my way:

• Nested families will be split into a separate GameObjects. Specifically when the nested family is 'Shared'.
  This turns out the be a bummer: my scripts runs though all gameObjects and read the metaData. When a certain category is found it will add a component, or change a parameter. However, the categories could be completely wrong when it was a Nested Family.
  It would be fantastic if they could be turned into nested prefabs.
• Revit grouping methods don't apply to the Reflect import. I.e. Revit Groups, Assemblies and Systems. Though the groups show up in the Hierarchy, I can't see which parts belong to that group.
• Something else; Sloped Glazing does not appear at all. (Or I can't find it.)

Hope to have made clear why I place this request.