Having professional voice actors would be great. Also, in the spirit of Star Control, try and have a little fun with it. If budget were no issue, we could assemble a dream cast: Have Keith David voice a militaristic species, with a few humorous references to his work on Halo & Mass Effect. Ellen McLain voice a mechanical species with a love of testing...and "cake". Aside from their legendary individual work, the recent commercials featuring James Earl Jones & Malcolm McDowell are hilarious; they seem tailor made to voice a species who argues with itself (Ex: Zog/Fot/Pik). Really, there are so many talented voice actors out there that an entire cast of celebrity heavyweights isn't necessary; so long as the genre meme's are witty and varied, drama realistic, and quality high enough to keep us entertained and engrossed.