As for Star Wars the setting has promise, as noted by another between ATC and ANH. It allows for opportunites to see some younger characters of those we know from ANH, some older from ATC perhaps and brand new characters.
But to me this has the same problem as the various Clone Wars series have had - We know what will happen with all the major characters.
I wouldn't necessarily say that's the case. Most of the major good guys from the movies are out of the game altogether during the 20 year gap between
Revenge of the Sith &
A New Hope. Most of the Jedi are dead, particularly all of the minor ones that got any significant screentime in the prequels. Obi-Wan Kenobi & Yoda are living in exile. Luke Skywalker is living with his aunt & uncle on Tattooine doing ABSOLUTELY NOTHING. I suppose they could still do some stuff with Han Solo, Princess Leia, or Lando Calrissian, but of those 3, Leia is the only one I think is very likely.
There are a bunch of established villains running around to work with like Boba Fett, Darth Vader, Emperor Palpatine, Grand Moff Tarkin, Greedo, & Jabba the Hutt. But with the good guys, I think that Lucas will be forced to create an entirely new group of heroes to focus on, which means tons of unknown fates, even if we do know the ultimate fate of the Empire & the Rebellion.