Blender Rigify for Unity Mecanim

My Problem: I am a game artist and i usually work with blender and unity3d. I use rigify for rigging character and use the add-on script from this video to export a fbx file and import into unity. github.com/trynyty/Rigify_DeformBones/blob/master/Rigify4Mecanim.py

This script is very useful as it turn a rigify rig to unity mecanim rig by one click, and also it have a function for exporting fbx file which removes all unneeded parts of models made with rigify. I think it is very helpful for artist.

But I find that this add-ons only support the old rig of rigify, and blender remove (or change?) the old rig in 2.79 Test builds. : (

Proposal: I hope Blender can keep the old rig in 2.79 and future version. Or I hope blender can add a and fbx exporter and game/unity mecanim compatible rig option for rigify.

I love using blender and rigify to build models and animating character for games, so i hope it can be considered.

Thankyou. (sorry for my english if it feel weird)