I know Kage has been talking of using fantasy RPG systems for Warhammer 40,000, seeing how it has so many fantasy elements, and how combat in the Warhammer 40,000 is unquestionably primitive and romantic.
Well, how about using the Star Wars RPGs for 40k? Kage has been wondering how to represent psychic powers. Why not use the Force? And you have the same type of romantic combat in Star Wars; even with all the blasters and disruptor rifles, you're quite likely to get eviscerated by a Wookie with vibro-blades or a Jedi with a light saber.
I realise that Star Wars does have its limitations, since the Dark Side of the Force isn't quite like Chaos. It can corrupt you, but I don't think it can actually possess you. There are no daemons either.
Like Kage said, it's really just a matter of imagery. I always tend to find Dan Abnett gives a rather more 'romantic' feel to 40K in his fiction. I mean, General Grevious just keeps springing into my head now whenever I think of Khanjar the Sharp. ;D
Star Wars: Republic Commando is a good example of this (and if you haven't picked up or borrowed a copy to try it, for shame! ). The concept artist envisioned that if the movies were shown through the lofty perspective of a Jedi, what might the same universe look like through the battle-hardened eyes of a clone commando?
Answer: a much darker, grittier representation of some familiar Star Wars imagery.
As to trying out the Star Wars thing; I don't know. I've been smelling on roleplaying for a long while now, but I don't really know anyone who's into it. I know of a few people who roleplay, but that's more along the lines of Dungeons and Dragons or Wheel of Time.
Maybe when I return to my home city, Bergen, I will come in contact with some roleplayers. If I am going to start roleplaying, you can bet your foot I'll be doing it in the Star Wars universe. Who wants to be an elf when you can be a jedi master, for crying out loud? ;D