I don't need to read books about people I don't care for in order to get GM material. I don't read books in order to get GM material, for that matter; that's just a side bonus.I see them as GM would see them...
If they don't fit on this side, then use them on that side...of an adventure of course.
Is this going anywhere? I read books to be entertained. Reading about unpleasant people can be entertaining, but it requires more skill on the part of the author. Most, frankly, are not up to it. I've deliberately tried to avoid using the word 'hero' to describe the viewpoint characters of whichever books I've mentioned. It's not about heroes or villians, it's about becoming interested in their fate. Or, in the case of Star Risk, losing interest in their fate.I rarely read to fill some sense of fair play or "God, we're short on heroes I need one to make me feel good." That's more the style of comic-books. Blatant. Obvious.
Again, I'm wondering about what point you're trying to make.
At the risk of being burnt at the stake by rabid fans, there is more to life than Traveller games. I don't read books just to get inspiration for Traveller games (I'm sure you don't either, but that's the inference one might well draw from what you just wrote). I don't think I'd ever run a game inspired by the Demon Princes books. That doesn't really change anything one way or the other about how good a read they are or how sympathetic the main character is.Kirth Gersen (whatever) started out as a decent read, but overall it's tough to make a single-point of adventure into a Traveller game where multiple characters exist.
Though the basic premise of the books could easily be turned into a campaign... Let's see... the PCs are all from the same small town. They've all been away pursuing their separate careers in the Army, Navy, Scouts, Merchants, whatever. One day they receive word that their town has been attacked by unknown pirates. They all make their way back to the town and meet in the ruins. Everybody and everything they knew and loved from their youth is gone, destroyed. There in the ruins they swear to stick together while they track down and punish the men responsible.
You want any campaign based on a wellknown book to look a little like the original as possible (unless you actully want to attract players by associations to the book). As for appeal, that's for the GM to provide.Traveller is more of a "team effort" than following one man's road. I think by the time you did, it'd look less like the original and lose it's appeal. I might be wrong though. I'm not a Jack Vance expert, and those have been around for ages.
Hans