Hey. This is my first post on the forums (love the podcast, guys), so I'll just get right to the point.
While I prefer to think I am "confident" in BioWare's overall ability to do things right, one could say I am deferential.
I believe racial restrictions will be good for SW:TOR for the sake of maintaining continuity and a cohesive story line, for the reasons mentioned, such as the xenophobia of the Sith Empire, as well as realism of the background of that species in relation to that class's lifestyle and faction allegiance. This is why I personally welcome the idea of certain species being faction-locked.
Also, as far as the somewhat mysterious origin selection stage of character creation, I think that could be an interesting way to open the door to more variation in terms of species to story and setting, as some have discussed elsewhere, that could allow for a way to explain a race being an option to a certain class. With the example of the possibility of a Sith Pureblood being a potential option for the Sith Inquisitor or the Zabrak for the Sith Warrior. Depending on the origin someone selects, it may unlock the option for that race while giving a story-centered reason for that option being available, such as (pure speculative imagination here) the Sith Inquisitor's slave origin being only one of the options allowing a Sith Inquisitor to be one of many strange races to the Empire, that would otherwise not be found roaming around, while another origin could be of non-slave origin such as an exile or outcast, allowing for more Imperial-friendly species.
One could go as far to say that the origin selection stage being used in this fashion as a form of continuity protection (I had another term in mind, but it may have not been quite appropriate

) as far as species are concerned.
That's just an idea of how that could work while creating more species possibilities without causing conflict with the story or realism (excuse me for the term usage, I know it's blasphemy when talking about imaginary concepts) of the circumstances of the setting.
It's obviously important for BioWare to find a middle ground so the optimal amount of people can be pleased and have the options they want. It's my hope that the final sets of choices of races we have for each class will be satisfactory for everyone. I don't see why BioWare wouldn't want that, too.
I don't generally comment on any specific parts of the SW:TOR community, since I can't bother to read what every person says while sifting through a lot of rage and emotional and opinion-fueled ignorant tirades. My only thought there is that again, I have confidence in BioWare to deal with it responsible, like they have, and don't let the emotionally vocal groups get the better of anyone else.
Thanks for reading.