Pages hierarchy.....

I'd like to see pages be able to have multiple layers.....example:

a page such as sitename.com/streams

but also have that act as a category of sorts too so:

sitename.com/streams/smokey

could also exist.....

I know it won't be possible but i'd like to build something similar to this: Live streams | Revillution - Your Portal to Video Game and Content Creation Entertainment | Gaming Forums

I figure for selected users i could build a page where i embed their stream and then have a section on their page with their socials and the like.....I think that'd be pretty cool.