On a more serious note, I don't understand all the fuss about LTE. IIRC it's something like 20Mbps in practice, which is faster than most Internet connections in the US.
What is the use case for such bandwidth on a phone? YouTube already plays just fine with HSPA+.
I have a verizon LTE device that I tether with from time to time, and the ping times I get to my home server are insane, usually around 20ms. When I tether on my HSPA galaxy nexus, ping times are usually around 100+ms.
Now this could be verizon vs t-mobile and not LTE vs HSPA (or some mix). Verizon is the only/main LTE-supporting provider right now, so LTE and Verizon are conflated in my mind, for better or for worse.
Do you have real-looking latency data for the first few hops from your phone? (...keeping in mind that latency information for intermediate hops is not always accurate.)
100ms vs 20ms could be t-mobile peering with your home ISP in some far away city, while Verizon peers locally. Based on only pings, you'd never know.
No doubt that very few of the reviewers actually understand that and complain about getting not getting 50Mbps now.
Aside from that, it's just another way for carriers to charge you $$$ for a feature that is only marginally useful.
Use case is everything you currently do, but faster.