Here we have the standard Linden Lab base avatar that is what you see when you take off all your meshes and alpha channels on Second Life. Crystal Frost can now load it direct from the stock files that Linden Lab distributes with their viewer.
These avatar files are distributed by Linden Lab as LGPL, meaning it's legal for Crystal Frost to include them directly, and include them it shall.
What you also see here, as white lines, is the Project Bento skeleton that made such a huge stir when Linden Lab first released it for Second Life.
The avatar mesh is not yet rigged to the skeleton, but I'm hoping to have that figured out in the next couple of days. In addition, I also have to get the morph targets working.
Once all of that is done and working, I will be moving the code over into Crystal Frost's avatar rendering system and it will, at the very least, allow for attachments to show up in the correct places on avatars.
HOWEVER, I will also be releasing a free library for Unity developers to be able to use the Linden Lab base avatar meshes in their Unity projects. Not that they're all that great of meshes to use, but as a free resource to create widely varying, mobile friendly avatars and characters on the cheap, it's not a bad starting point. I say mobile friendly because they're very low polycount by today's standards and only have a single bone per weight.
Also, can you imagine walking around as the base Ruth avatar from the Second Life library inventory on VRChat? That'd be a riot.