I'm actually a little confused on how it is that people who read "Booster Gold" under Geoff Johns, Jeff Katz, and Dan Jurgens aren't still sticking around now that Jurgens is writing the book. To me, this book feels like it's got the exact same level of humor, adventure, and drama going on.
With the conclusion of his first storyline on this new "Booster Gold" title (since, of course, Jurgens also wrote and drew the original "Booster Gold" series that introduced the character), Jurgens manages two things simultaneously. First, he wraps up the story about missing daggers, massive amounts of time travel, and the revelation of who the mystery villain was. Second, he sets up what is presumably the next story to come, as Goldstar discovers what's happened to her own timeline.
What's great about these, though, is that Jurgens has both of them partially tied into events that happened under Johns and Katz as writers (as well as Chuck Dixon's two-part fill-in). In other words, Jurgens hasn't forgotten what's happened up until now and he's trying to make the comic as seamless and cohesive as possible. He's managed to maintain the same general tone of fun throughout the book as well, doubling timelines and events back on themselves in only a way that a comic centered around time travel can really do well.
It goes without saying that Jurgens and Norm Rapmund are up to their consistent skill levels as well. It's a very classical, handsome look for the series. Jurgens gets the big moments down pat, of course, from bursting in on the scene of the villain to the big showdowns. I think he's a little underrated for a lot of the smaller moments, though. Booster Gold crammed into the substitute time sphere, for instance, manages to look high-tech and claustrophobic all at once, and Hi-Fi's shades of blue and gray to color the entire scene go a long way towards helping with that general mood. Likewise, the images of Goldstar learning the truth of the past six months are done pretty well; the final panel of her slumped on the ground may be a little over-the-top, but otherwise I really like how he draws the confusion and nervousness on her face.
"Booster Gold" is a fun comic, and it worries me that people might have been leaving becomes Johns and Katz aren't around any more. Come back! All is forgiven! Jurgens is doing a great job! I promise!