Transit grids

I know I'm a bit late to the party, but today it hit me: How a 'polar grid' can be expanded into a frequent network. It's simple: rather than the center being a point, it becomes a line, a very high frequency transit spine. And while it's not as central as a single point, it's much larger.

Think of it this way: The point stretches into a line

The point of a central connection point is to bring all the routes together, to facilitate transfers between the routes. If you think that the point is to provide service to that point (and nearby district, you are missing the point of a network: That the combination of links is greater than the sum of the parts.