There is one "eh, didn't expect that". Other than that it is typical military fanfare blah blah blah crap.
Well, that's exactly what I expected from the trooper story and I personally enjoyed it quite a lot. And that "did not expect that" moment is quite pivotal in turning your character from just a regular soldier into something a bit more meaningful and heroic. At least in my opinion. For me personally that was enough, I did not want to be the most special snowflake in the known galaxy, I am just a trooper ffs!
Have not tried other classes that much, but at least Imperial Agent story was a bit different from the very beginning and quite interesting (maybe even more interesting) as well.
But, I still think it's pretty much depends on your personal taste.