I didn't fukk with the story at all.
Gameplay is good though. Like others have said, the backtracking is
status, but it's a nice little game at the end of the day. One part of the story I liked though was how small it showed Cal's struggle was. The people you fight are pretty much considered Novices at least, Adepts at the very best.
The best avenue for any future single player star wars adventure game though is something so far in the past or future that they can create their own story that can seamlessly fit into a timeline. Too many stories and games are trying to fit narratives in that period between Episode 3 and 4.
If anything, I think The Old Republic (the MMO) showed that you can do a good villain story without sacrificing anything. For all intents and purposes, the Sith Warrior character can be one of the most brutal motherfukkers out there, but I found their story to be one of the best right next to Imperial Agent and Jedi Guardian.