(Wall of text incoming, feel free to skip my personal experience with professions as these are concluded from a short time)
Greetings, so I've played this game in 2013, then got bored since it had very little stuff to do in endgame - now I see it has changed, so after being burnt down with WoW and installing currently the base version of the game and running around for a bit, I think I'll give GW2 another try as it seems a nice refreshment.
So I am looking for a profession! I have a few boosts, namely the anniversary boost to level 40, and I will get 2 more to 80 once I buy the expansions, albeit I won't use them for now. I have a 80 mesmer and close to that necro, but leveling in this game is fun and is not an issue.
What I am looking for is a profession that has:
Difficulty - medium to hard. Generally, I don't want a faceroll profession - I want something that you can play chill, but one you can always get better at, learn new stuff and improve. "Easy to learn, hard to master".
Variety of builds - I am kinda indecisive in this regard as I want my character to be able to do different things and not pigeonholed into one or similar builds. The one that could use either of elite specs or not use any at all. I use https://metabattle.com/wiki/MetaBattle_Wiki as a point of reference, is that a good source? Because judging from that most professions can indeed use any of elite specs or none at all.
The ones that can support their allies and do the damage aswell. Coming from WoW where support classes don't really exist (only healers), I would like to play something that can do both at the same time, or at least switch between full damage role and support role. Having unique utility and weird skills is welcome.
To try professions I've put them into the PvP lobby to see what their skillset looks like. Yet to see how they work in actual game and can't check out elite specs, so know very little:
Elementalist - looks flashy, a lot of abilities to tinker with and weaver spec looks quite catchy, the fact that you have even more spells at your disposal is something I really like, I am really bored of a simple toolkits you had in WoW. And another elite spec seems like a great support spec. My fears with elementalist is that it has a high entry level and requires to have a gaming mouse (stupid, eh?).
Ranger - while ranger by itself is not my cup of tea, druid spec seems like a go-to way to build ranger and fits my idea of supportive damage dealer that supports allies and puts conditions on your enemies. Other elite spec seems fun too. But I don't want to stuck with druid only and druid seems to be a go-to way to play Ranger.
Guardian - fits my idea of supportive profession. I am just not sure how complex guardian is, he seems rather straightforward. Can guardian go for something else other than support? Dragonhunter spec seems kinda fun, though.
Thief - I love rifles, but it seems that they are terrible. Sad. Are double pistols builds viable? Wanted to play double pistol thief in 2013, but it was considered to be a troll build. What about one-handed thiefs (the ones that use only 1 one-handed weapon for a different 3)? Are they still pointless or they may have some use?
Warrior - again, rifles seem fun, but also appear to be more of a novelty than an actually used weapon. As for other weapons - I don't know, there are many of them, but they feel similar. Perhaps also seems too straightforward.
Mesmer - I don't really like the shatter mechanic, so I guess that's not the profession for me. My only 80, but not the one I particularly enjoyed playing, even though it has all these fancy utilities.
Engineer - I don't know why, but I feel like this is not something I will enjoy. Could be wrong but it seems extremely complicated to pull off while lacking variety of different weapons other professions possess.
Necromancer - read that those have a bad stigma in the game, but also classes I've played in WoW were death knight and warlock, so I want something different, even though I've enjoyed it in 2013.
Revenant - obviously, can't speak of it as I don't have the expansion yet.