my plan was to let you play as the third species first, you will encounter the shadows at the end of this piece you will switch to the shadows, you are now in the events before the firs piece.
You play as them until the beginning of what you just started with as the "third" species here is the species that I use in the role play your enemy. Then you switch to the species that I use in the role play and you learn about how the shadows destroyed your world.
Believe me what you will see from every species when you fight against them will make you hate them, but when they get the chance to tell their story you might not see them as "evil" anymore.
After this there is still plenty of back story left to fill and only time will tell if that ever gets told, just like the rest of it.
this world also got some heavy inspiration from how I see phyrexia(not evil but misused) and I wanted to create a world where there was no real evil yet plenty of reasons to "hate" your not favorite side. I can't wait till I have more time to work on it.