They just really need to stop making filler episodes. I don't know if its because they don't want to run into a Game of Thrones problem, where because the show does a book (Now half a book) each year, they've only got about 3-4 more years before they're at the end of the books, or because they want to milk the show. Either way, as I've said in my previous posts fighting with people here, I don't think the amount of character development we got in the latter half of season 4 can hold up on its own. They could have easily combined episodes and not lost any of the impact. Especially the Daryl/Beth solo episode combined with the Bob/Sasha/Maggie/Daryl/Beth episode. That should have been 1, not two. I personally don't believe we learned enough about any of those five characters to warrant two separate episodes for them.
I think really the only episode this latter half of season 4 that focused on one group that deserved it was The Grove. And it was because it dealt with several decently important storyline threads being built up for more than just this half season. The conclusion of the Karen/David deaths at Carol's hands, the acknowledgement of Lizzie's sociopathy, an actual extended look into Lizzie and Mika's thoughts about the Walkers. That was the only development outside of what Michonne had done before the apocalypse that I cared even a small amount about. I suppose I would also accept that the midseason premiere focusing on Rick and Carl was also alright, but even then, I don't know if Carl's actor was good enough to give an entire episode to him alone. Im not saying he was bad, by any stretch, but that episode could have probably been combined with the one where Michonne joins them. At least for that story part, considering the episode with Michonne had another arcs in it.
Again, its not necessarily about just getting events done. I enjoy character development as much as the next person, but when its a very small amount stretched over an entire episode, then I don't think its worth it. And as a fan of the show (And the comics, although not as much as some merely out of having not read them all) and as a consumer in general, it annoys me when people pretend that it was some grandiose character development episode(s). Just because two characters are interacting, that does not inherently mean they are developing important parts of the story. I'm sure I could think of better examples if I thought about it, but just off the top of my head, the Naruto season fillers are a great example of what I mean.