It looks like their system was based on Topos MetroMesh in-band mesh backhaul, so someone using 1Mbps on one access point is tying up 1Mbps on multiple APs. This was at a time when 256 Kbps could have been considered "high speed". Not sure how many APs are connected to a fiber/copper/microwave backhaul, I guessing just a few to cut costs, but it would seem to me that as many APs as possible should have an out of band backhaul (ideally fiber to every AP)...Also APs antenna/RF might have to be tuned down to reduce coverage and a higher density of APs is likely needed with the increased usage - or multiple APs with sector antennas ( 3 x 120 degree, or 6 x 60 degree) are placed at locations instead of single AP with omnis - I'm thinking something LIKE the Ubiquiti
NanoStations could be placed around a light pole to act as combination AP and 60 degree sector antenna and be more ascetically pleasing than the box with whips attached found right now, electronics to feed the NSs could fit inside most poles at the base, or in a small box near the AP/Antennas.