When I hear the word relay... I imagine notes bouncing from one radio tower to another.
Imagine if I text you, and the only way for you to see my text if you are connected to the same tower as I am. our entire communication system will go down. Same with the internet.
Information needs to bounce off of relays. Not clients connect to a relay in japan to fetch the info.
I only say this because i care : ) Maybe I am thinking about this completely wrong.