That's TWD's thing though. Develop a character so people like them and then kill them off.
Dunno about that. I'd say most of the deaths on this show of prominent characters are ones that were pretty unlikeable.
What I would say is a TWD trademark is when they suddenly devote time to a character that's been background fodder like Beth and Bob, then it is their time to go.
So, basically Rosita better hope she doesn't suddenly have 20 minutes of screen time during the season premiere.