At first, I didn't think Randall would be a danger to the group, but after beating the crap out of him and threatening to kill him, I now think he'll do anything to get revenge. Does he get away, find his old group and bring them back to do it?
I think the incident with Carl is going to drastically change him (and you're right - what are his parents thinking, letting him roam around without supervision?). I don't think he'll tell anyone what happened, but I think he's going to the dark side now. Watch out, because he won't pass up shooting things now.
Dale's gone, so does the groups conscience die with him? Shane's about to go off the deep end, so if someone doesn't kill him, then he's going to kill a lot of others.
Daryl is also going dark and Hershel and his family seem to be abstaining from making any decisions (btw, Maggie's sister's name is Beth). Will Glen take over for speaking for Hershel's family now, as the crown prince?