Just started playing this last week, it's pretty fun, I'm a lvl 40 Sith Juggernaut.
Is there anything to the endgame besides running alts through their respective story lines?
Like AAs? (Alternate Advancements points that you can level after hitting cap to make your main super OP), or big raids etc? Maybe there's other fun stuff to do that they came up with?
I can't see making a bunch of alts holding my attention for very long, and I'm not really into PvP.
There is definitely endgame PVE in terms of raids, yes. Haven't done them so I can't give you a reliable conclusion.
However:
+Based on how people talk about the raids (Ops), I haven't seen a single complaint.
-On the other hand, based on how people talk about the raids, they seem not as good (complexity-wise) as other games. Mostly the emphasis is on having the perfect rotation, etc. It doesn't
seem like there is as much emphasis on
handling aggro, specific strategies, etc. More-so just rote perfection on executing your abilities.
Again take that with a grain of salt, as I haven't done any endgame. Seems like the two balance out, actually, because IMO even these being Star Wars fanboys, you'd expect complaints if they were bad content in terms of overall quality.
Again on the other hand, the
way the raids are designed may not live up to your standards with seemingly lack of emphasis on situational-based adaptation (for me, I think being tactically adaptive is more important than hitting the "perfect rotation.").
Also take into account my preference is for the class storylines so I am unlike you, in that I have no issue doing alts just for storyline.
Hopefully this helps you shed light.
Also, besides that, you're nearing endgame and enjoying your class, so you might as well just experience for yourself. BTW I also like the Juggernaut in terms of gameplay more than the other classes, in that I am playing it more than my other alts even though another storyline may be more interesting (granted the Sith Warrior storyline is higher on the quality list).