I'm level 40, on Hoth, and yeah the game has gotten pretty boring. There is literally no motivation to keep playing other than seeing how the class plot develops. It's not like the quests are fun, or the worlds are fun, or the PVP is fun, etc.
The zones are absurdly huge, especially on Hoth. I probably spend more than half the time playing just driving from one place to the next. Then say I want to go somewhere else, I have to go to the shuttle, go to the station, go to my ship, choose to fly to the place, land at another inbetween station, take the shuttle to the planet proper, then finally I'm there. Such a huge time waster and this game is full of it.
Then when I finally get somewhere, it's just boring quest after boring quest.
"Oh, you're that Jedi! You should talk to Lieutenant what's-his-face, because he needs help!"
So I go find the guy.
"Hey! I really appreciate you coming here. Listen, we're fighting with the Imperials here, just like every planet you go to. Anyway, I need you to go re-enable our sensors! The imperials totally destroyed them, and we're completely useless!"
Ok, now I get to go drive around forever to my objective as I pick up more generic quests that I get on every planet.
Then at the end of the zone, there'll be a guy saying, "Wow you sure helped us out. But I hear the guy in the next zone could use some help too."
And then you go to the next zone and it's just the same stuff again.
So boring.
All the while I'm collecting Legacy XP that does nothing, I have a UI that is rubbish and does not even allow me to do something as simple as move the freaking windows around, and in some places I have green laser beams blasting across the map.