So, I've been thinking about getting back into this game. It has been 3 years since I last played it.
Is the expansion worth it? Keep in mind that I will probably be solo-playing since I don't have a guild or anything like that.
The new sub-classes are fun for the most part, the new Class (Revenant) too, Raids are a thing and they are pretty solid, but since you said solo play mostly that's not really a thing that matters.
The story was cool, but way too short and seemingly going nowhere, and the loooong wait for the next chapter just completely killed the mood.
The new zones are very different than the old ones, for better or for worse, that will depend on who you ask, but basically they are much more 'on rails' and centered around a very big map-wide event that culminates in a big boss fight or something along those lines.
Think something like the centaur event in Harathi (Modniir Ulgoth) but on a much much bigger scale.
Also, is there a link to the new armors? One of the main reasons I stopped playing was because I thought all of the light armor looked like crap. Just curious if they have added something that would let you wear light armor but have the look of medium/heavy armor.
Best way for you to check that is to log in the game, go to the closest bank and there is a tab in there where you can preview everything available in the game.
I personally don't like most of the new armor sets, but some pieces are cool to use with older ones, but that's just a matter of personal taste.
I know they added legendary crafting and legendaries are now account bound instead of soul bound (which is another thing I hated - freaking soul bound) but be on the level... how easy is it compared to before? I thought it was pretty ridiculous before. I don't have a lot of time to play generally. I think was like half way to my first legendary after 6 months of playing before.
Basically the way you always made legendaries is still in the game for all the original legendaries.
Loot/buy the precursor -> Craft your legendary.
What they just added is a way to craft one of each precursor weapon once per account, it's a 3-part collect-a-thon that will send you all over the world searching for specific places and/or items, or complete specific jumping puzzle/events, with the second part usually being a big (and I mean BIG!!!!!) material sink.
In most cases if you collect everything yourself and don't resort to buying some parts of it it's as hard if not more than completing what's left once you have your precursor.
It's meant to be a reliable way to obtain one, not an easier one compared to just pure RNG so it'll be up to you to see if it can be worth it.
All the new Legendaries (we only got 4 so far and they put them on hold 'indefinitely' ....) you can only get the precursor through that collect-a-thon 'quest' you can't get them through RNG or buy them on the trading post.
The expansion has been a mixed bag for many and the support so far (outside of Raids and PvP) has been quite sub-par, they just started to adress WwW a few month back so it's a bit more lively as well.
Now if you really haven't played for 3 years you can still just log-in and catch-up with a TON of things without owning the expansion, and you most certainly won't care for what seems to be negative aspects in my post.
There should be two new zones you'll be able to explore if you have a level 80 character and you can have access to the second season of the living story for a few bucks that is related to those areas and basically a big prequel for the expansion.
Your best bet is maybe just to log-in and get a feel for it for a bit, after all, it's not like you have to renew a sub-fee or anything.