N3 was the only other season I watched regularly due to SJ. The story was intriguing up until Vikrant and co track did a backflip. But some of your reasons why you are not feeling it are EXACTLY why I am feeling it this season. Especially the point about a large family (which imo there is to some extent - the entire cheel clan, Jai's fam and Bani's step family). Too many characters feel overcrowded and cluttered. As it is the entire cheel clan are all villians. Also, I feel like they generally have more characters just so they have extra people they can kill off in the name of revenge lol.
There is certainly a difference with other Naagin seasons here but that is why there is something interesting to watch too. I am especially here for the Naagin-Cheel love story though... despite not having much faith in Ekta given her track record in literally all her shows.
I felt like N3 had too many characters that started off with distinct personalities but a couple of episodes in and they were just mere props. Even Mahir's Dad and Step-Mom had such potential but they even ditched these characters toh baaki sab ki toh door ki baat hai.
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