I am in agreement with the OP. The world is too linear, has too many loading screens, and is too empty. Some of the zones, like Nar Shadaa are disjointed and don't even feel like a planet.
The gameplay is great though, and having a ship is pretty sweet.
I don't know how much the devs can do though, the direction they took the game was very mass effecty, how much can they undo?