I don't think a lack of namespace is that much problem. Sure, it is often annoying, but people are creative enough to create a short enough and still available

I don't think a lack of namespace is that much problem. Sure, it is often annoying, but people are creative enough to create a short enough and still available crate name for most cases. Namespacing only makes sense for a large group of related crates---and it wouldn't give much benefit over a flat namespace. As other mentioned though, a typosquatting is a much bigger problem and namespacing offers only a partial solution. (You can still create a lookalike organization name, both in npm and in Github.)