I like the fact that there are animes and a movie and a light novel, my complain is how everything is needed to understand a great part of the game, yet there are barely any tie-ins between all the other media and the game. The battle against the Marilith could have been featured in the game, with flashbacks to the attack when Noctis was a little kid. The repercusions of what happened at Insomnia could have been mentioned in the main game instead of the Comrades expansion, which tbh feels so disconnected fromt he main story (would it kill them to feature Cor Leonis at the base as a permanent resident just like Monica and Dustin? C'mon!).
That's the problem with a lot of modern franchises/long-runners, though - they expect you to read EU material in order to understand the full "scope" of the story. Doubly so if it's a series that starts contradicting canon as it drags on. It's not just FF that does this. The nadir is still the
Rise of Skywalker marketing - want to hear the full message Palpatine was broadcasting (that isn't heard on-screen)? You had to have played Fortnite to hear it, as it was promoted as such.
One of my favourite franchises, Deus Ex, is nigh-impossible to follow unless you're a diehard fan of the game and know all of the source material (i.e. books, tie-in games, comics). Did you want to know what happened to Adam Jensen between missions four and five of
Human Revolution? There's a four-part comic series that deals with that. His actions during the otherwise-unmentioned "Mexicantown Massacre"? Same comic. There's an entire novel/tie-in game series that runs parallel to the prequel games and involves three characters, only one of whom makes an appearance in
Mankind Divided, in which she only obliquely refers to the events of the one tie-in game (
The Fall). It got to such a point that you have to refer to an artbook to find out the identities of the double-agents within Task Force 29 and Janus' identity!
When I can set aside time, I intend to get into XV with mods, though I've got so many prospective titles on the plate that it's hard for me to get into a game that requires me to view multiple pieces of tie-in media just to understand chunks of the story.