It's a second wind for a classic game, that's for sure, but still have a lot of thing's to fix.
More reward's for leveling, less compromise with the game, and a truly-free account creation are really charming and invite you to play/return to the game. Not to mention the new places and raid bosses, more fantastic than ever.
The grinding still are a problem, but are obvious they tried to remedy this issue making different kinds of quests for the player to do, not only Errant Quests or Kill Monsters quest, for most part.
The game still needs more makeover to return to be a success, like more variety on quests, more type of gamestyles, and less more grinding to be compelling again for modern standards.
But, faith is not lost, like NCSoft showed us in this upgrade, probably they are once again in the right path, let's just wait to see if the glory return to this game.