The upside: Of course, there's one other character from "The Empire Strikes Back," introduced in part by Kasdan, who could sustain their own movie -- Lando Calrissian, as played by Billy Dee Williams in the original films. An old friend of Han Solo, who owned the Millennium Falcon before him, Lando is a gambler-turned politician, morally ambiguous enough to betray his old friend, but good-hearted enough to change sides again, proving instrumental in both the rescue of Solo, and the destruction of the second Death Star. It's a pretty great arc -- from scoundrel to leader of an entire floating city to disgraced collaborator to galactic hero -- and one of the few cases where we feel there's more fleshing out to do (he was lucky enough to escape the prequel trilogy entirely). There's a long history in the extended universe of Lando's adventures both before his first film appearance and after the end of "Return of the Jedi," so there's a precedent there, and you could include other fan favorites like Han, Chewie and Boba, plus it'd give some diversity to the franchise.
The downside: That said, there are still hurdles. For one, if we're ten films into the Marvel movies (if we go up to "Guardians of the Galaxy") without a "Black Panther" film getting any closer, we're not holding our breath that Disney will break the cinematic color barrier. Then there's casting and chronology, as Billy Dee Williams is clearly too old to play the character, so they'd either have to recast or go the Young Lando/prequel route. Still, there have already been rumors he's set to return for the new films, and there are ways to approach it creatively to make it work, so we could dig it.
The updside: Weeks before the confirmation of the "Star Wars" spin-offs, Vulture reported that "300" and "Man Of Steel" director Zack Snyder was developing a film set outside the new trilogy, along a parallel timeline, inspired by Akira Kurosawa's "Seven Samurai." Snyder's reps denied it at the time, but Vulture is standing by their story, saying Snyder had met with Lucasfilm to talk about the project. It was greeted with some skepticism at the time, but makes a lot more sense now that the reports of stand-alone projects are concrete. It's the kind of conceit that would only make sense as a stand-alone movie, rather than as a new episode, and strikes us as the project that Simon Kinberg, given his skillset, could be developing. Whether Snyder is involved or not, there's no smoke without fire, and it seems likely that such a project is in development at Disney. Certainly, the idea of a film taking place alongside the new trilogy would seem to make more sense than a Yoda-centric prequel, in terms of Disney's game-plan. And while that would seem to indicate that it'll center on new characters, it doesn't rule out, say, a young Mace Windu being one of the seven central Jedi characters. We feel fairly confident that a version of this project is in the works, but we'd also wager that it probably wouldn't be the first stand-alone film out of the gates, so it's likely to be several years before it's in theaters.
The downside: Not much of one. We're all for new characters and new stories. However, if it didn't take for some reason, Disney would have a dud on our hands, but we believe they have to trust the audience and creators that there is a thirst for greater stories within this universe that aren't six-degrees-of-separation connected to what we've seen already.
The upside: We've said before that given the ages of the principal cast, the new trilogy should predominately focus on new characters, with, at the most, cameos from the older actors. But that doesn't mean that they don't have a place in the franchise going forward. And one such place could be at the Jedi Academy. In the Extended Universe, Luke spends much of his time rebuilding the Jedi order, and training up new Jedis to take his place, most notably in the "Jedi Academy" trilogy of novels by Kevin J. Anderson -- "Jedi Search," "Dark Apprentice" and "Champions Of The Force." While we doubt the new films will be following any Extended Universe plots particularly closely, the option is certainly there for a "Star Wars: Jedi Academy"-style spin-off, which would see Luke as a wise sensei training up a new cast of characters who could theoretically take over past "Episode IX." Yes, it's essentially "Star Wars: First Class," but the way that the "X-Men" movie has been able to sit alongside (and in "X-Men: Days Of Future Past," be absorbed into) the main franchise, could be a good guide as to how Disney could move things forward.
The downside: That said, while we expect a Jedi Academy, and Luke, to be part of the franchise going forward (rumors, albeit incorrect ones, have already suggested that was the case), we think it'll probably be as an element of the new trilogy, rather than as a stand-alone project -- it could seem to be crossing the streams too much to make this a side-franchise right out of the gate, especially as young Jedi Knights are bound to figure into "Episode VII," unless Michael Arndt has gone in a very surprising direction with the new trilogy. Still, the option is always there, and this could maybe come to pass after "Episode IX." Or maybe it's a potential teen-friendly TV series? (And given Marvel's move to the small screen with "S.H.I.E.L.D." it's probably only a matter of time before Disney figures out ways to bring the property to cable as well).
And of course, there's plenty of other options out there: a film set thousands of years before the existing movies, in the days of the Old Republic; a "Star Wars" mob movie, focusing on the rise of Jabba The Hutt; a sort of space "Top Gun," with Luke's old pal Wedge Atilles training up new X-Wing pilots; explicit pornography starring suggestively-named octopus-headed Jedi side-character Kit Fisto... Let us know what you'd most like to see in the comments section -- you never know who's reading...