While I can't speak for everyone else I enjoyed Kaladin's backstory some aspects were a bit boring you kinda knew the broad strokes of his past early on in the book which made it a bit of a slog to get through for me. Shallan was my favorite character in WoK I loved her wit and sarcasm so having her backstory explained as well as getting information on her mother and father's mysterious deaths has a certain appeal to me that Kaladin's just never offered.