npm ls show maintainer count/names

Hi,
npm ls show the tree of your project, but it would be awesome also if we can see the tree based on the maintainer of those libs: for example “John Foo” is the maintainer of 3 modules in my tree and so on.

Right now npm update/install show a message like:
added 26 packages from 16 contributors
so I think that improving it could be a good output for users to start knowing the people/orgs behind a module name.

What do you think?