I can honestly say that i don't think they will kill daryl instead of Glenn. Glenn's death is so iconic and develops Maggie's character. Also I love daryl so I guess I'm a little bias.
Glenn's death is also way too predictable. There is a lot more evidence supporting Daryl's death than Glenn's.
but glenn is everything maggie has. that's just too much of glenn dies, poor maggie.
Abraham dying instead is another possibility
What do you think?