How many related titles should I add to a movie/drama which is part of a larger franchise? All of the titles? Or just maybe the ones that are immediately connected to the submitted one?

A case-study: Yesterday, I was adding info to the movie Negotiator: Mashita Masayoshi. The previous submitter added a large chunk of related titles and I purposely withheld myself from adding new ones (to complete the franchise), because I was afraid that the admins will go mad at the number of related titles to just one movie.

I would greatly appreciate any advice about this matter.

Thanks! I read the guidelines before, but I must have missed that fragment somehow.