Man, my favorite change now is the

Spoiler
Show
Shane thing. I guess it makes sense. Kirkman, iirc, has stated that he kinda regrets getting rid of Shane so soon in the comic. That dynamic wasn't nearly milked for all it was worth. It deserves a more extended treatment, and it looks like the show is going to do that. Have him be alive when the baby comes, for example? Oh man. Fun stuff.

Also, I kinda hope they pull Morgan back in more quickly. There's no plot-centered reason for them to hold off as long as in the comic, especially since Rick was using his messages to him as an awesome "captain's log" moment, as well as reminding us of him. I mean, since they have Shane back, why not bring Morgan in more quickly? I also notice they skipped meeting Tyreese and his family... though they can wait for awhile to add them, since they have the Hershell family coming up! This is going to be so much fun.