As a role player, I am interested in characters. When the ship, crew, bridge officers, and captain are all my creation then I truly feel they are mine. I also agree with the statement of the ship as a character. To create and make my own things and imagine the rest is perfectly OK with me. I may not have a “home planet” for my custom race but that does not mean it does not exist to me.
If the team has time, though, what might be interesting would be to have a “home world generator” as well. When in the race creation screen there can be a few pre-generated world types to choose from. Then there can be a list of options. Things like, green seas or giant crystal structures could create a sense of uniqueness and the players could occasionally get some sort of instance based mission to take them there. This way we get a personal factor to the story and a reason to be more creative without filling the galaxy with extra planets... unless, of course, you want something like that... You could do something similar to Spore there with character content helping you fill out your game!
I really hope they include the Anthropomorphic races. For example, the Cat people: I know they're in Star Trek, look at Star Trek V... sure she's not a majorly represented race, but still, I'm sure I'm not the only one that'll enjoy having a Furry Federation character.
I can't imagine someone'd forget a subculture like Anthro's, Oblivion has Khajits and FFXI has Mithras.
P.S. Maybe you could squeeze in a Fox race too, if there's room?--and not just because I'm partial to Foxes ...but you could probably tell that.
Anyhow, keep up the good work, I'm really excited!
Will characters have the ability to evolve and change physically. many brave tales can be told of scars earned in battle. Loosing an eye in an assault, embedded pieces of metal, perhaps even a Borg implant. All would be cool game mechanics.