The Walking Dead is no stranger of changing the adaptation of deaths in the show from the comic. Whether that be timing, trading an iconic death from the comics with a different character, or killing a character currently alive in the comics.
Thus far - The Walking Dead show has killed two characters who are currently alive in the comics, Sophia and Andrea. Both were a huge shock, and while I was okay with Sophia being axed, I was upset that Andrea was killed (despite being written poorly) - we never got Comic Andrea in the show.
There was a rumor circling around that in the finale - a character currently alive in the comics would die in the show. That turned out to be, thankfully, false. But it got me thinking - which comic book character currently alive in the comics would you kill in the show (YOU HAVE NO CHOICE YOU MUST CHOOSE ONE OR YOUR LIFE DEPENDS ON IT)
P.S. THIS CHARACTER WOULD HAVE TO DIE WITHIN THE FIRST HALF OF SEASON 5
Obviously: Rick, Carl, Michonne, and Maggie have MUCH more story to attend to. I would keep Eugene alive to D.C. but after that I wouldn't care. But - in the end - Rosita would be the person I would axe. Even in the comics she really isn't there.