I think that most folks would just be happy if the transport network resembled something that rational beings might create. There is zero rationality to the current system. Transport systems are designed tor two main things - the movement of militaries, and the movement of trade goods.
If you are designing a transport system for the usage of military units, you will want a strong centralized system capable of transporting troops quickly from wherever they might be, to wherever they might need to go, with the priority being a central hub with interconnects between the largest and most valuable (strategic or trade-wise) territories.
If you are designing a transport system for trade, you will have two concerns - getting raw materials from their source to processing centers, then taking finished goods to where they are sold. This would create a near-identical overall transport system, but with more connections - raw materials frequently come from places with little or no real military value, and from areas with small amounts of wealth.
An empire concerned with both trade and the defense of their nation would have a vast network of roads connecting all major population centers, all military strongpoints, and all major sources of raw materials. An empire utilizing teleporter technology would do the same thing, but their network would not be constrained by three dimensional space...
The current transport hub system is irrational. I think they realize that, and are beginning to address it. I believe the only rational solution would be to allow the building by crafters of a real transport network connecting every town with every other town. Make us build it, sure, but make it possible.