On top of the fact that the game is visually mesmerizing, good soundtracks really give you the sense of exploring unknown planet in far flung universe. Simpler game mechanics also allow you to play without having to micro through early phase of the game as it was difficult for new players in historical civ games.
But that is it. While units belonging to each affinity are aesthetically pleasing to see, there really are not much difference in your playthough whether you choose to become a synthetic machine or biological entity. Stupid AI stay idle for the most part just letting you steamroll the map at any day of the week. Diplomacy is almost non existent too.
Overall it could have been a much better game unless devs gave up too early.