Crenando
Pencil Neck Geek
Trying to stay on source material is fine, in my book, if that's what they want to do. Bringing in lore or characters from when a show goes downhill or an adaptation that kind of sucks is their prerogative.Also, fandom rps that insists on adapting every part of the source material, even the stuff that is objectively bad.
Adapting storylines note-for-note from something into RP form with minimal changes never really ends well, on the other hand, and kind of makes roleplaying in a setting redundant if you can't break from this preordained track that you're on.