Depends. My views of Crosscurrent are colored by my disappointment in Riptide. Both fleshed out their characters rather well, focused on taking their own path instead of just latching on to the current story arc, and did their best to explore underdeveloped areas of the EU. Scourge is fascinating in that it explores a wider portion of the Hutt spectrum than most works, while still keeping true to who Hutts are. Some of the characters are rather flat, but Mander was, on the whole, a nice change of pace from the Jedi we tend to encounter in the EU nowadays- he's competent in some areas but quite deficient in others. It also makes much better usage of EU settings, species, and concepts than a lot of the other recent EU works (HEY GUYS, LET'S SPEND SOME MORE TIME ON CORUSCANT! LOL JACEN'S A SITH BECAUSE BOO MORAL COMPLEXITY). Admittedly the author is using his own pet characters as the antagonists- many of them appeared in the Tempest Feud campaign guide- but it works, because it allows for them to be fleshed out more realistically. The author also does his best to avoid species stereotypes- we see not-so-skeevy Hutts and jerk Wookiees, for example.