Returning Player looking for info..
Since GW2 isn’t a gear treadmill you won’t see a lot changed regarding gear except for Ascended gear is slightly better than Exotic gear but very easy to obtain from FOTM or crafting. Materials for crafting ascended gear can be obtained in the open world so that’s easy as well, I can’t remember offhand ingredients but I am just returning from a 6 month break from the game.
Engineer has lots of gadgets, few weapons to choose from but utility skills offer you extra unique weapons. A lot of Engi’s power is from AOE but not restricted to AOE but yea there’s many opinions but I would say that’s a big part. Engi has good AOE and other useful skills.
GW2 is not a gear treadmill, it’s largely story driven and content based. There’s plenty to do in the open world and in dungeons and instances so you really can just enjoy the game. Try different classes, you can easy get your weapon skills and just buy the cheapest junk weapons while you’re level 2 or 3 and try them to decide what you like and if you are uncertain you can always create another character and repeat until you find what you think you’d want to stick with long term.