City Campaign As Random Table

A small idea wich came to me the other day, which I thought might be interesting to share.

What do you need when running a city-based campaign? Some things are:

1. Lots of roughly detailed locations and NPCs.
2. Lots of rumours.

My idea was to create a city campaign solely in the form of random tables. I was thinking of a format, per table entry, like the following:

Number - Name
Description
Secret: something which could be very interesting to adventurers, but which is not commonly known.
Hook: a direct adventure hook which can be found at this location or via this NPC.
Connection: at least one connection to another numbered entry.

So the same collection of numbered entries can both be placed on a map as locations, and used as random rolls for rumours and adventure hooks.