I know Rukkirii has already said they are not, but for extra measure...

Please do not change the achievements. Right now they are the only real long term goals in this game.

Leveling is easy, seals are easy, crafting is easier... Please leave us poor "old fashion" types something to actually work for.

As for unlocking achievements, I really like this. I like having additional reasons for exploring and using the world. To me being a part of a virtual world is the reason to play an mmo. Tying in lore to it is great as well.