Legs weren't included because there's no way to do leg tracking with a headset. So to have them you have to build an inverse kinematics model and try to simula

Legs weren't included because there's no way to do leg tracking with a headset. So to have them you have to build an inverse kinematics model and try to simulate them... Which also doesn't really work because you don't know the overall body position of the user. In a practical sense, a VR avatar is a disembodied head and hands - that's all the data you actually have. The legs thing was kind of a weak criticism. The issue isn't any one thing, it's that Facebook's overall vision is boring, and keeps putting "sell ads" first.