Well I watched the season 3 finale last night and for me it was easily the worst episode of the entire show so far.
Rick has been hard to like all season and I think the writers on this show struggle to write female characters well. Thank god Michonne is there as she's the only female who is a match for the men on the show. Andrea was systematically destroyed as a character in season 3 which was unfortunate to see.
The show will be weaker without Andrea in the cast that's for sure and her death has taken a lot of enthusiasm I had for the show away.