So here is something cool/weird to think about,
Rhysand's name means: Bringer of Dark power and Perfection. Sarah J Maas knew that everyone would fall in love with him and he used to be feared for his dark power.
Azriel's Name means: God is my help. Azriel is close to Azrael which means Angel of Death. Az is sometimes known as a death angel with all of his spirits and stuff.
Cassian's Name means: Hollow and Empty. I thought this was kind of ironic because a lot of people make fun of Cassian and he is kind of empty headed and dumb. (After all he is no longer allowed in the summer court)
Morrigan means: Great Queen. I thought this was cool because Mor is so badass and we love her so much.
Feyre means: Beautiful. At one point I saw something that said huntress which is funny because she was the one who killed a fae and started this whole thing.