I’ve been using the iClone 7 suite for 6 months or so now to record animations (Perception Neuron mocap), create characters and edit animations. It seems to do it quite well. I can’t speak for LODs or facial animation, but unfortunately the latest iClone suite does not support UE4 out of the box. The main problem for me is that root motion is not exported, despite the root bone being present. This isn’t a problem for everyone, but if you’re thinking of using it for exporting root motion animations, be aware you will need to do this manually.
See my post about it here: Root motion is not exported to .fbx and so is incompatible with Unreal Engine 4 - FeedBack Tracker
This is my current workaround: https://www.youtube.com/watch?v=80cOPnhK-o4