(Copied from original User Voice forum)
"Please add this it would be very helpful for UE4. It would make rigging and animation a lot easier in Unreal Engine."
"I can understand why Plugin support isn't open to any plugin as people could use Maya LT in production instead of Maya. However I feel we need the ability for third parties to supply plugins for Maya LT that can be passed by Autodesk as usable in LT. Things like autoriggers, 3d input devices, Allegorithmic Substances, etc."