I don't know about you, but I want strong yet flawed characters. I want them to have blemishes. People aren't perfect, neither are the people we write about. Because unless we are writing about animals, we're writing about people and they live in the pages of our books. How imperfect we choose to make them is up to us. We control their lives like a chess game and we move the pieces around the board until the end of the book comes and the game is won. I want to give my characters as many hardships as they can handle. They often tell me, "more!" So I give them more troubles. I want them to suffer so the reader will feel in tune with them.
I also let my characters help me write the book. "Ah," you say, "She's gone berserk." No! They offer all kinds of strategic plans to help me solve problems that always arise when I'm writing my stories.
I talk to them. I interview them. I let them interview me. I also read somewhere(can't remember where) to let your MC write you a letter. The letter tells you what the MC thinks about the story you are writing. And it also tells you what kinds of changes you need to make with the plot. Try this one. It is a lot of fun.
Strong characters that have flaws and they help you write the book. Yeah. That is what it's all about. :)