Sense8 would be awesome, especially if you alternated perspectives between all eight of the Sensates and part of the choices that you (the reader) made was when to hop from one to the other.
I’m a big Twin Peaks fan, soooo… Yes?
DC Comics has a vast library, and everyone has their favorites. Me, I’d love to see the Batman: Brave and the Bold cartoon brought to IF. That show was a lighter take on Batman and paired him up each episode with a different B-list (or even C- or D-list) hero. The IF story could be one long mission, and each chapter was a different leg of the mission where Bats teamed up with a different guest-start hero. Then, in the final chapter, all the guest heroes return for the climax and the Epilogue details all these guest hereos’ fates, plus any changes to their relationships with Batman.
The comic gook Saga has excellent world-building and would be fun to play in. (Not necessarily playing as any of the known characters from the comics – just new MCs living in the universe the writer created.)
I’d love to see a slasher film series, like Friday the 13th, brought to life in one of these games. I think slasher is tough, though, because you really need to jump into different characters’ perspectives. The Final Girl is an important character, but you actually have to have quite a few other scenes where the various unspsecting victims get killed without the Final Girl around. Not sure how that would work in interactive fiction. I think if it were just from the FInal Girl’s perspective and showed her finding everyone’s bodies after they’d all had (off-page) death scenes, you’d lose quite a bit of what makes this genre special.
I believe there’s at least one Hosted Games game about gladiatorial combat plus a Heart’s Choice game about it coming out. I haven’t played these, but I’m hoping they can scratch my Spartacus: Blood and Sand itch.
I’m also a sucker for TV teen drama. Degrassi, Love Victor and Heartstopper? Someone, please make these into IF! And maybe, dare I ask it, Eurphoria?
EDIT: Oh, and if someone could do a faithful adaptation of The Sims, porting it from PC/consoles to IF, I think you’d have something really (pardon the pun) game-changing. It might not be the most exciting IF property, and it would likely have a lot of detractors. But if someone provided a model for adapting that kind of real-world sandbox game into an IF channel, imagine what that same model could be used for in other less-real-world games that want to give sandbox-style play.