I'm finding that building the orbital terraformer is a waste of that particular planet's production? Even if its tiles are full, i'd rather set the emphasis to research. Terraforming on each individual planet, by this time in the game, takes a turn or 2 and most of my planets are generally not building planet improvements or not many at anyrate.
And I assume the galatic guide book is a blunder since by the time its built all anomalies are gone.