Okay, I'm giving in. I love Sprint, don't get me wrong, but they STILL aren't even close to giving me 4G in this area. I'm not going to pay what they want to buy a mobile hotspot and it's associated fees and caps. And, turning my phone into hotspot is same limitations in speed and data caps.
So, long story short, I looked into T-Mobile's 4G coverage in my area (great), and plan pricing (fair, unlimited with throttle after 3GB but that's okay). I got myself mobile hotspot and plan - we shall see how 4G actually compares to 3G for loading my maps and stuff during the day. It comes tomorrow, so report will arrive soon.