The only problem that I have with dismissing humans as "vanilla" or "boring" is that it doesn't have to be so. Yeah, a lot of fantasy and sci-fi games like to play them as the everyman, middle-of-the-road, jack of all trades, master of none kind of species, but that doesn't have to be the rule, just like all elves don't have to resemble Tolkien's elves.
I mean, games like Starcraft and Sins of a Solar Empire and even Warhammer 40k tend to portray humans with the same "gritty", almost "space-trucker" kind of theme. But you could change that, heck, it's your story. Have humanity develop in some interesting way, give them an artstyle that you yourself find interesting. You don't have to go with the usual grey, gritty, inelegant look that pervades so many human races in fiction. Even in reality, our current spacecraft don't look like that--they're closer to the Eldar than the Imperial Guard, at any rate.