Dunno, Im having lots of fun. The thing that will hold this in good stead is the smoothness and responsiveness of the engine. Outside of Wow, its about the best there is. The quests are kind of garbage up until around level 15 or so, though I did find some good ones in certain areas of the exile race with tails (not good with names;P). There are a lot of fetch quests though, but they have the systems in place for phasing, public events etc. so Id be confident in time the levelling may improve. Did feel grindy.
As for the classes, yeah they are bland. One of the first MMOs I got into was Anarchy Online, and I miss the diversity and uniqueness of the classes in that game. Every game Ive played since then was "Oh here's the warrior. Here's his gap closer. He wears heavy armour. Here's his stun. He can also tank." and so on.
The healing is also a mixed bag. The problem is there is not a lot of support gear in the game before the first dungeon, so you have healers (myself included) entering dungeons drastically undergeared. Some of the classes such as medic don't even get their awesome/cookie cutter heal spell until 24, so they struggle big time. Add in the fact that at level 20 there are mechanics that wow doesn't have until end game (one shot wisps, moving in a circle together whilst avoiding aoe damage on the ground, co-ordinated interrupts) and you have one very unforgiving experience.
I actually really like this, I miss a challenge and its fun, but I'd imagine it is very alienating to people completely new to the genre. They could do with a dungeon around 15 or so that is a lot easier and gives everyone a chance to gear up somewhat for the level 20 experience as their relevant roles (tank/healer), and keep the difficulty of the level 20 dungeons the same.
As for healing .. It's a mixed bag. At times it feels great and I love it, at other times it feels clunky because some spells are targeted, some aren't, and there are not a lot of oh shit buttons (at least at 20) so if you've just done a big heal and someone takes spike damage, you are left with the monotony of using your builders before being able to heal, which feels like you don't have any power to affect things. That part doesn't feel dynamic or reactive, whereas the rest does.
Housing is great, and I say that as someone who has never, ever been interested in any way with housing in a game. It never appealed, but its cool being able to make things like jumping puzzles on your land and filling your house up with shit from a boss (and a boss that is somewhat difficult). Feels rewarding.