He has a whole follow-up trilogy from Pandora's Star. They are every bit as massive and pondorous. I personally liked them just enough to finish them, but I won't re-read them.

However, I absolutely love the Night's Dawn Trilogy and re-read it once every few years. I think I read it at an impressionable age and it really stuck.

One could also consider reading Charles Stross' "Accelerando" which has plenty of stuff about dyson swarms.