Chaplin
Better off silent
Because there's enough compelling storylines in the comics so there's no need to create this storyline. There is even one where Beth gets abducted. Just stick to that. Also, you think that these filler episodes were entertaining? you'd be in the minority. The comics are on going so there's no running out of material. There's really no need to create antagonists when there are plenty to go around already. Hell, the better thing to do was to at least dedicate an episode to Fr. Gabriel so we can see what happened with him(maybe they will, we don't know yet) instead of showing what happened with Abraham.
You forgot one thing:
Daryl isn't in the comics at all. Can't have one without the other. Ironic that a lot of people have Daryl as their favorite character and then complain the show doesn't follow the comics enough.