I hope you're right about Judith, because carrying a baby around is only going to slow the show down. Although a baby crying without fences and prison walls would attract walkers to them on a more regular basis. It could have also have moved into an interesting, yet dark storyline where someone felt she was endangering them, so wanted to kill her. Developing tension/standoff/someone killing her.
I thought feeding the zombies was happening before the Lizzie actually developed into mini-Carol? I'm not so sure with that part of your post, but unless we do find out exactly who/what/why, then that is a pretty pointless side story at all.
Does the feeding happen in the comics?