I am using it and I like it because it is more accurate to actual star types. There ain't no purple stars.
Now if you will throw in a few quasar, pulsars and brown dwarfs, we'll be all set.
I made the abundance of the stars as accurate as possible, within the realms of 'game playability'. Example, reduced the amount of red dwarfs and increased the blue giants.
I did try for planetary nebulae but the game does not like nebula being used as a star system object, yet.
The brown dwarfs sort of worked but the lighting was that of a fully ignited sun and looked a bit weird. I imagine brown dwarf systems to be small and dark.
With pulsars I created even smaller white dwarfs and had empty systems to represent the nova explosion clearing away all in it's path whilst creating the nebula dust to contribute to the next generation of star births. With empty star systems the game creates tiny star systems and places neighbouring star systems right up close to the pulsars,
Still, it was fun creating this mod and for those with fluffy purple unicorn races there is the purple star option available. 
