Its amazing. It looks pretty ok (meh on the GAF scale), probably due being an MMORPG, but as such its dense. The maps aren't that big, but they're full of things to explore, quests to do, monsters to slay. Almost every quest is something special with cut scene and a story behind, no simple "kill 5 rats" or "collect 7 flowers". If you have something like that, there is surely more hiding behind it. It has a strong lore and plays with quests. Heck, there are a lot of quests where you don't have to fight anything at all and really hard quests were you have to think outside the box. At some point I had to decode morse (and find out, that I had to decode morse code).
Gameplaywise it has no level- or classsystem. You have a skillwheel with 525 skills you can more or less combine as you wish to make a build that fits your style. With countless option to fit yourself for every situation (to swap for single and group play e.g.)
Watch a CGI Trailer
Watch the Launch Trailer
Just look into it a bit, I love this game and am pretty sad it has so few players.