Of course more are on the way...that's like saying next week there will be a new phone....it's obvious that when something is inadequate, it will be changed.
However, looking at Sprint's cities, there are few major markets. Sedalia, MO? I drive through there a few dozen times each summer. It is tiny. Many of these still seem to be pilot cities. They have three major markets.
With the immense failure that was Wi-Max, I don't expect Sprint to be competitive in LTE for years.
The Commandments of Android
1) Open RAM is wasted RAM - Don't use Task Killers
2) Cheap devices are cheap for a reason. Don't expect high end performance.
3) Boot Loop = Wipe.
4) There are no viruses for android.