Problem with Humanoid Animation Type

Hello,

I am trying to move a rigged character object with animation from Blender to Unity using the Rigify add-on. I have completely rigged the character and moved the the object via saving it as a .fbx file to Unity using Mecanim. Unfortunately, when I try to configure the rigged object using the humanoid animation type, an error occurs as the head (DEF-head) is not a child of the neck (DEF-neck). Strangely enough, when I use the Legacy animation type, the rigged object and the animation works properly. So I actually have two questions:

1. Is there anyone else having trouble with the humanoid animation type (I used the meta-rig object in Blender to create the rig for the export)
2. Is it even necessary to use the humanoid animation type or is it better to just stay with the Legacy animation type?

Thank you in advance.