Rare, though they were not in Mass Effect one, they were around in the galaxy during that time and so they are allowed. The only races I am not allowing are Raloi, Geth and Yahg, though keep in mind we are (for the most part) talking about large organisations here, and unless the race is considered important by your leader, the race of the lesser folk doesn't matter very much.

Technological predicament? Sounds fascinating. I'm glad its not stopping you from expressing interest sandman9913!

And yes, for those wondering, the above statement means that I [i]will[/i] be allowing Elcor, Volus and Hanar characters. Such will recieve a little extra scrutiny to make sure its not a joke character, but they're definitely allowed.