The love triangle between Steph, Morelli, and Ranger, while titillating, is starting to get boring and overplayed. Both men are very macho, but neither seems to mind sharing her. Men like Morelli don't share their woman.
Ranger's daughter, Julie, would be a nice addition to future books. She seems tough and a little mischievous. She will definitely follow in Ranger's footsteps even though he didn't raise her.
I still consider this series the funniest I have ever read. And I would love to see it become a tv series.