I think I'd lose my mind only ever being able to play a single role. As you already know and since it's been mentioned over and over again, you have to be extremely careful when it comes to picking your Advanced Specialization. Once you choose one of the two options you can not go back. Of course you can choose any of the three specs in that specialization but that may not offer you comfort if you make a mistake here. Advanced Classes are the bread and butter of swtor's class advancement. How Advanced Classes works is a bit hard to explain since there really is nothing out there to compare them too. The talent specs for each class do resemble WoW in many ways but the way they make you choose which you want to specialize in at level 10 reminds me a lot more of something along the lines of Aion, Guild Wars or even .
let me introduce some upgrade of swtor credits in March and April this year of (2018):
But their actual Advanced Classes are called Mercenary, Powertech).This is probably the hardest question for anyone to answer, but I will take a swing at it! What you need to do is just find something you will enjoy the most. It's such a dumb thing to say since everyone says it, but it's the truth. I am personally making sure I pick an Advanced Specialization with the ability to tank or the ability to heal.Since it's the game's official website they kind of have to take the more advertising route with what they say rather than tell you exactly how it is..I can't stress the importance of researching this before the game comes out so you know exactly what you're going to do. As for a bit of self promotion; a good set of class guides to read in helping you choose your class are right on my website actually.