That sound like a quarter of what they were doing during GW1 expansions. They added several zones, quests, classes, skills for everyone(so like new weapons in GW2 terms) as well as new actual game mechanics(Factions had battlegrounds, meh whatever, Nightfall had heroes, can't remember if eye of the north actually added anything new besides more heroes, 8 heroes cap, metamorphosis powers which I think were new maybe and maybe dailies/hardmode dungeons or some shit).
I wasn't saying they didn't do anything. Obviously they did a lot of stuff over time and very often, it just feels like all they did though was small scale in nature and due to the way they designed it, it's mostly gone too which is a fucking stupid design if you ask me but whatever. The problem, and that's my opinion and a subjective one at that, is that I look at your list and there's basically nothing that sounds interesting. It's been what, about a year now? In GW1, Factions was released a year after and it had more content than what was permanently added to the current game. Nightfall was released 6months after that and had A LOT more content than factions, it probably had close to the content in the fucking vanilla game, classes aside.
I hope they do have an expansion they're working on, even if I have to pay 30bucks to buy it, as long as it has a lot of shit in it. 5-6zones, new class/weapons, new skills for existing ones, maybe new race(but have to redo meshes and all the classes animations and shit so that's not important and very time consuming), new stuff to do like housing or mercs or polymock(was that ever added?).