I gaffled this idea from the thread on CM and am also running a campaign based on this alternate history. I'm probably going to deviate even further from the canon as the campaign progresses. It'll be tons of fun.
Odds are, that was the thread I started over there where I was looking for ideas. I got a lot of good feedback there, from
actual Star Wars nerds (I use the term affectionately, being many kinds of nerd myself). I've never been much for Star Wars until I started running it. Folks like The Universe were founts of great information.
The What If? format has a ton of benefits going for it. I feel like we're really creating a new story, instead of finding cracks in the established canon and filling them in. Also, I'm able to completely re-use characters from the movies, and my players love running into them in unexpected ways.
* Leia is a Sith lord, apprenticed to Darth Vader. They are in a covert war with the Emperor.
* Luke is also a Sith lord, apprenticed to the Emperor. Additionally, taking a cue from the Zahn series, the Emperor has been using Luke clones as elite soldiers and infiltrators. The party has killed or captured 3 so far, and run from another.
* Jabba was assassinated, as part of a plot by Vader. He was replaced by a force-sensitive Hutt from Nar Shadaa.
* Taking a cue from KotOR, GOTO is (still?) around. He's also active on Nar Shadaa and throughout the galaxy. He's been a relatively minor player, but has a big bounty out on some of the PCs.
* The party infiltrated the mostly-empty Star Destroyer Devastator, and rescued an old and deactivated R2 unit, thought to contain plans to the Death Star. The Republic is investigating this very thoroughly.
* One of the aforementioned Luke clones infiltrated one of the three Republic fleets, and hijacked the computer they were using for randomized Hyperspace jumps. They jumped straight into a massive ambush, caught in Interdictor fields, and killed.
Yeah, there's a lot going on, and my players have been in the middle of most of it. It's been a very good game so far.
-O