I'm heavily into fantasy, and while I enjoy Sci-Fi, I don't usually get as excited about is as I do for fantasy games. However, I'm very excited that IRE is doing this game, and I look forward to playing it! With that said, I'll share my character creation process and maybe you can help me get an idea of who/what I want to play.
For my Starmourn character I want to draw inspiration from the setting itself, rather than from other Sci-fi settings, b/c I'm either not super-familiar, or I don't think they'll mesh well. The name "Song Dominion" immediately jumped out at me as interesting but this has little to do with sci-fi. I just like to play bards. The concept of beauty and dignity persevering through hardship and tragedy is particularly appealing, and I'd like to play a character that embodies these themes.
I find that I'm not overly-fond of any of the song Dominion Races. The Decheerans are the ones I'm most interested in but there's something about them that's rubbing me the wrong way and I'm not 100% sure what it is. So that begs the question - if I'm a part of the Song Dominion and not one of their founding races, what bought me to Song City? Outside of the Song, the race I am most interested in playing is Shen. I have some interest in Jin, and Human, but a Shen is my clear favorite.
Then there's class. I generally go for spellcasting (or in this case SPAAAACE MAAAAGIC) classes, and that pretty much means the Nanoseer at this point in time. However, a half-drunken Shen outcast also sounds appealing and more fitting to the theme I mentioned earlier, so that might be what I go with.
So it looks like based on my reading and research, I'll want to play a Shen Scoundrel in the Song Dominion. I really wouldn't mind keeping him in the Celestine Ascendancy either, but I'd play a Nanoseer who's a historian there.