Regarding Daryl, I think his statement to Rick in the woods was telling. When Rick thanked him for helping him "work things out," Daryl said "That's what we do." I'm assuming there was more to the sentence, something like "in a family." With all the crap between Daryl and Merle, I think Daryl will choose this family.
Glenn has really showed that he's not who Merle remembers, and Merle remembers a few positive things about him, though still thinks little of him. And if, in Merle's opinion, the "wuss" can become so strong, what might the rest be?