Glenn Fleishman has a good post on the Philadelphia wireless effort. Philadelphia will be the first major city deployment and he (and others) think that the success or failure of that deployment could be a bellwether for other big city deployments.
One issue he points to is nodes. Originally, Tropos believed a city network could provide adequate service with twenty to twenty-five nodes per square mile. That number has since risen to 30+ and Novarum (a muni-scale independent testing service) puts the number even higher.
I don’t know what the node density is in Minneapolis but I’ll try to get that information. I do know that US Internet is increasing density in the pilot area and they told current pilot customers that the reason was “to accommodate the additional leaf coverage since installing the original
network.”*
*from an email that US Internet sent to current customers.