I've been playing in two Saga games in real life, running a PbP elsewhere, and am about to start a second PbP Saga game as a player.
I'm loving the system.
As for broken things/places with potential for abuse, here are the following things I've observed which would be good places for your GM to take a look at and decide whether he thinks it will (or may in the future after seeing how it shakes out) be houserule-worthy, along with the house rules I'm working on to address them.
- Skill focus on level 1 characters is very strong.
* I'm considering house-ruling my next game that skill focus' bonus cannot exceed your character level. This way, it's still a way to say "I'm better than just 'good' at this" at first level (i.e., it doesn't ban skill focus from a 1st level character outright) while easing them into the full power of the feat. I'd be more inclined to let it slide if skill focus UTF wasn't so versatile that it could, with an adequate wisdom score, be used against pretty much any kind of weakness in an opponent. Bonus effect: by removing the 12+ UTF checks from level 1 characters, my Jedi wouldn't feel like deflect was a de facto requirement as their level 1 talent.
- The system encourages multiclassing, but uses a lot of 3/4s BABs.
* I use fractional BAB for 3/4s levels, round down, so that multiclassers don't take the -1 hit if they don't carefully and deliberately plan out their level distributions.
- Starships and vehicles aren't adequately covered in the core book. There are a handful of example ships, and the rules for vehicle combat are fine, but players are dying to modify their ships and there's no guidelines, and I'm really dissatisfied with the thus-far-disseminated challenge level calculating rules.
* The Starships sourcebook is coming out soon, which should cover everything except encounter building, and maybe that, too. Worst case, we have to eyeball stuff and learn by doing.
- Force grip is disgusting in a one-on-one.
* Part of the retort is "don't set stuff up one-on-one!", but I don't buy that because Star Wars is about fighting outnumbered, to me. Even if you've just got one grippable boss and some mooks, the ability to trivially lock anybody out of combat 'till they're dead is way strong. I'm throwing in the requirement of a Force point to sustain it.
- Climb, Jump, and Swim didn't get consolidated, but everything else did.
* I consolidated them. Racial bonuses that grant re-rolls only apply to specific uses.