Eric Broockman of Alereon has posted an interesting item on his UWB blog about the future of UWB over coax. He suggests that the technology holds real hope for broadband home networks at 390 Mbits/s today and 1.6 Gbits/s in the not-too-distant future--far beyond the 100 Mbits/s+ MoCA spec. All it needs is a standard, some development of the software stack and adoption by gateway and set-top vendors.
That's a pretty big mountain to climb, given that MSOs are leery of anything that smacks of wireless or less than full nailed down content protection. What's more, it's not clear what the forum would be for setting this standard and there is a ton of software development work required to make it work.
I'd love to see a Gbit/s home net, but the real problem with home nets today is not so much that we lack bandwidth. It's more that there is a lack of focus among the many options offered today, as I noted in a CES roundup on the topic.