Ok episode not liking the Woodbury stuff and im glad that Lori's death and mad Rick is out of the way.
A question about Merle and his gang hunting Michonne was that explained why they where after killing here?
Not that I noticed, but it's fairly implicit The Governor wanted her sword and her head for his collection. A more rational reason may be that he doesn't want anyone telling the outside world about his little fiefdom. Plus I'm sure his designs on Andrea have a baring on things.