Vorpal+5,
This idea actually does seem viable to me, at least in part. Couple of ideas:
A. Start with a massive star, like Formalhaut. Generate systems until you have one that looks kind of what you have in mind for a home system. Tweak as desired, and play. For extra fun, set up a large asteroid field distant from the star. I'm playing a game now that includes a resource-rich Fomalhaut with a large, distant asteroid belt and, even with mid-range Fusion drives, distances and travel times slow down the game pace quite a bit.
B. Take a star with a distant secondary, ideally one in which the secondary is not O-class or M-class. Generate and tweak the secondary's system until it suits. Remove all planets from the primary - this also eliminates all possibility for Lagrange points - and add a bunch of comets, 10 or 20 of the things set to various distances out to way out. I played a game once with a set-up this this and, let me tell you, travelling 50+ billion km just to get to a warp point changes the entire game dynamic!