I'll definitely create a character for each race, but I'll main as Chaos. Why? Daemons, the warp, death to the false emperor, blood for the blood god, red on black armor, spikes, destruction, mayhem... SO F***IN' METAL!!!
Orks because orks. What more do you need? Because orks are so stupid that their technology works simply because they believe it should. Because I like being the comic relief of the universe.