Sounds like a great idea. Here is a great solution for those who don't know blender well and want an all unity method to optimizing your heavy avatars from my findings so far.
Here are some examples of my Miltina and Eno3D. Both known for high poly avatars.
BabyJack
If we are continuing to move the goal post from Poor rated to Medium rated avatars then those of you who can achieve this level of avi optimization need to step up and either help those who dont know how to optimize, without expecting some kind of compensation. 1/?