That's the thing, every actor would meet with producers and discuss what they wanted out of their characters, if there were any changes they thought could be made and such. From what I heard, there are only two actors who never made time to meet and discuss their characters: Beltran, and Lien.
That's pretty common in television.
On the DVD extras for the 80s show "thirtysomething," one of the writers talks about how he'd sit in his office just letting one of the actresses chat with him *in character*. He got ideas from her just carrying on a conversation--in character. He won Emmys, she won Emmys, the show went down in history as groundbreaking television.
Sounds like an all-around win to me.