I am fairly confident that they have content patches, and expansions for that matter, fairly well developed well in advanced. lol Cute though.
Personally, I like achievements! It is definitely some time that I can focus extra energy on. I don't dwell on the list of crap like Haf does. But, it is nice to see us accomplish something beyond the norm.
The thing is, it isn't everyone's cup of tea. I see and hear players poop all over the system, and talk about how it is needless fluff on our already candy coated MMO. Meh, so what if it is. It's optional. Don't do them. To each his own.