I'm fine with mmos, anything in particular to point out differently?
Bolded the points I've seen people be confused by because of their experience with other MMOs.
No loot stealing or node stealing. Everyone who participates in a fight gets their own loot. Each resource node can be looted individually each day. It's a basic QOL improvement that makes playing the game much more like fun and much less like politics. It also makes having other players around really fun, because there's no sense of competition.
GW2 is not afraid to reflect the storyline with permanent changes in the game world. Some people like it, some don't.
No healer/tank/DPS trinity. Every character is expected to be reasonably self-sufficient, every dungeon is designed to be completable by all class combinations and builds can be swapped instantly. Naturally some classes are better at some things - you're never going to get a thief group healer, I believe - but there's a lot to be said for the flexibility. Wait times to get into a dungeon are practically instantaneous for popular runs and not too bad even for less popular.
Combat is really active and involved. Some people (me!
) really enjoy it, others get overwhelmed or have a hard time adjusting. Think FPS or ARPG combat. Positioning is key.
Endgame grind is optional. GW2 isn't a sub game so there's no reason to artificially pad the gameplay and force everyone through it. A lot of players finish everything they want and gradually drift away, then come back for an update. I play with people who left for months and then came back. I did that also. Some people want a game that can demand all of their spare time, and GW2 can do that for a few years but it's really more geared towards people with other commitments.
Really, most parts of the game are optional, play what you want. People are given incentives to do certain things but very little is required. Some people level to 80 in a single zone, some never set foot in PvP, some people master all 3, some people purchase all the instruments and spend their playtime entertaining people in cities.
The trading post is cross server. No one can manipulate an individual server market for profit.
The game really is B2P. F2P now I guess (not super happy about that, tbh). I never felt like the store was the way of my playing the game. Obviously I'd like for everything to be free forever, but that's also not possible in this world so oh well.
Jumping puzzles are awesome, they're like platformer minigames hidden throughout Tyria. There's really a lot of stuff lingering off the beaten path that's fun and quirky.
Tyria is genuinely, astonishingly beautiful. The art direction is top notch.
The story has some pants-on-head stupid moments, but also has genuinely funny or touching moments. Overall pretty standard for a video game. They've updated some things to address player complaints, so if you see people having issues with Trahearne check the date to see if it's before or after his personality transplant.
Overall, ArenaNet listens to the players. They have sometimes misinterpreted the feedback they were getting, thereby screwing up on a massive scale, but they've also fixed each instance of that.