Nowdays many times, filmmakers opt for the safe route, If a film is successful, there make a part II even if doesn’t have any similarity and many times the title is chosen first and then a story is fitted in.
Examples like Jannat 2, Jism 2.etc come to your mind. Hate Story when released in 2012 was a shocker as it had very bold scenes compared to most Bollywood films, setting a new trend Its sequel isn’t that steamy, just a few hot scenes The film is narrated in a reverse mode as is the trend lately, then goes into flashback It is mostly predictable.