Before Rogue Trader is finished, what are some companions we would like to see?

Personally, I know it’s a pipe dream but I’d love to see a roster of Heretical characters to complement the heretical choices in the game. A Chaos Space Marine from anyone but the Word Bearers, a Daemonhost, or something along these lines would be a good addition to the game imo. Or companions to represent each of the Chaos Gods.