I have not picked up this book but I have bought the Science Division book which seems to have a lot of this in it.
Just giving my opinion but encounter seeds and plots hook do not help me much as a GM. They create work - rather then cut down on prep time. In the old days, D&D modules included many random encounter tables but they also followed these up with full stated encounters and sometimes with motive. That cuts down on prep time.
Again , just my 2 credits and your efforts are appreciated.