When they first talked about the three W40k books that were planned Rogue Trader was the only one I didn't immediately say "YAy! now I can play campaign x, y, z" that I had previously dreampt up and sheled.
Lately I have been considering what sort of game I would run and the very beginnings of an idea have been forming...
With that in mind here's what I am hoping will appear in the game or at least in a supplement.
I would like to see a similar level of power to Dark Heresy, I dont see the need fo the people and occupations in RT as being more powerful, just more diverse and unique reflecting the different setting.
I hope they do a similar path for RT like they did with DH, that is, your people start out as one among many, perhaps higher up the chain of command than in DH. But I don't really want one of my players to HAVE to be the Fleet Captain, their are so many pitfalls to that, I would probably ban the occupation (y group might actually be able to handle said situation to begin with but sooner or later it would get to them). However if it starts out with the players being in charge of individual vessel in a fleet or departmental heads and eventually they work their way to bigger and better roles I would be happy for an RT equivalent of Ascension to eventually appear, byt then my players characters should have developed into individuals where someone could become a Commander type.
A couple of people have mention Battlefleet Gothic, man I loved that setting, the game was a bit blah, but I like ships and big guns, broadsides, boarding actions and slow tactical maneuvering for position. I do hope that FFG is able to come up with an RP system that gives the feel of 18th century sailing vessels (well their 410th century equivalents) squaring off without the need to resort to markers and miniatures, tables of endless calculations on turn rates and all those other devices which basically introduce a tabletop game into an RP. Its just to distracting to break out figures in my games, it ruins my narative flow too much. I know its a lot to ask but I really do hope this happens...
In addition to the Character gen and ship building rules I would also like to see some form of planet/culture generator, basically extend out the Xenos generator a bit so if needed there is some sort of simple resource to build a world in 5 minutes. While I fully intend to design a plethora of worlds I knwo that at some point im going to need to stall my players with a "random planet encounter" and my brain isnt going to be up to the task.