I voted: A lot
I'm an Ana Lucia fan. I wish she'd been in the series longer. She reminds me of a female verson of Sawyer.
Sawyer wasn't a popular character on the island at all in the earlier episodes but look at him now! He was protecting Claire, jumping off the helicopter so that others could get back home and he still thought about his daughter and gave Kate a message to give to her.
Sawyer is practically unrecognisable as the same character we first saw. I think Ana Lucia could have gone the same way; but I suppose having two characters going from bad to good might have been a bit repetitive.
Cheers, Miss Austen