I second on the points of the lack of being able to use facial expressions and body languages. Why with phone interviews, I usually do horribly for these reasons. All communication is strictly base on words and tone of the your voice. One slip up on verbal eloquence could be a huge impact.
What goes up, will inevitably come back down. Whoever you have to step on when you go up, you will be at their mercy when you go down.
The truth is strictly what the ones in power perceives it to be.
Enjoy any good things, even the little and menial ones, as you will never know what impending distresses could descend upon you in a moment.