I'm also rather curious to see just how the Old Republic fits into the story now, not in the least as two of the most interesting videogame rpgs of the last decade and a half, Knights of the Old Republic I and II, are sets in that period. Not to mention a full blown mmo in the form of The Old Republic also focusing on roughly the same period. Personally I'm not not much an MMO fan, but it has certainly led to some very cool cutscenes!
Another rather interesting element from that period are the Mandalorians. Now they'd been hinted at in various written material and there was always the between both Fetts and these voracious warriors from Mandalore. The stories behind the Mandalorian Wars and how they got into conflict with the Jedi through Revan and Malak are a very nice read, or playthrough if you'd do the Knights of the Old Republic rpg route
Heck we already got to see more of the them during the Clone Wars era, with animated series dedicating a fair bit of storyline to the resurgence of the Mandalorian warrior cult by means of the Death Watch.
One of the fun things about the Star Wars franchise is just how much stuff there is in there, with so many smaller locations, cultures and factions having the potential to make it to the tabletop. A few leftover minis can add a ton of character to an rpg group or make for a great custom Imperial Assault campaign. Add some droids, Jawas and Tusken Raiders, or some extra ones given that there's an expansion for the game with them already, and you have all you need for a Tatooine-based campaign.
Do some slight rules tweaking via the skirmish rules and have the Galactic Empire attack Cloud City.
Though even if we'd stuck with the Mos Eisley cantina scene there'd be plenty of interesting material to dig into (LINK to some more info on all those random creatures in there).
It wasn't until the opening of Return of the Jedi though that we got to see just how influentially the underworld was. Now there's definitely a point to be made for those first 15-ish minutes being redundant in the story, or Jabba making for a more interesting character if somehow he'd shifted sides and joined the Rebels instead of the Ewoks. But visually and world building-wise the opening is fantastic.
And that does it for this series of random Star Wars ramblings, time for me to go and get myself a movie ticket. That said, there's a lot of potential for some great Star Wars content this coming decade. Especially if some of the rumors for the side stories are true. Who wouldn't like to see more about the creation of Rogue Squadron or how the original Deathstar plans where stolen. Sorry about that last one Kyle Kattarn, but a heist-like movie centered around old and new bountyhunters could be great.