I haven't played Echo, but with PS8 i am not particulary scared. I had played a lot with and against whisper, and eventually you know where he is gonna land most part of the time. The only list that could allow to be more impredictable is the one whisper + Yorr.
If you could guess where Whisper will be for most of the time, then your opponent doesn't know how to fly a Phantom very well.