There is a ton of stuff to be faithful to. The most recent games have given you exactly what things are supposed to look like - the power armor, the vertibirds, the stimpacks, the vault outfits, what the ghouls look like, etc. You have to stay faithful to all of that - you don't have the luxury to adapt to your interpretation, whether that's purely artistic in difference or due to ease of production.Why’s it so tough? Could one reason be because of extensive lore that’s already in so many graphic novels, comics, and game? I know there’s a video that covers the history and reasons behind each known vault before this series. Which it seems to borrow bits from two other vaults, they may even tie in with them out other vaults from certain implications.