Edge lit = cheaper, less power consumption & thinner bezel, but poorer brightness uniformity,
Back lit = more expensive, even uniformity, but more power consumption and the resulting wasted heat generated.
Local dimming only really works on full array, but you pay for it.
Abundant OTA television is what makes this country different from all others. Lets keep it this way. If you like Wi-Fi so much, OTA fits right in. After all, it is wireless.