I personally believe that the Elite Specializations was a great addition to the game; when balanced right at least. They add a whole new flavor of variety to existing professions, making some of them feel like they're something else entirely.
But I am curious about something, and I would love to hear the community's thoughts about it. Is there room for more Elite Specializations? What else can we add to all of these professions that won't end up mimicking what already exists? It's not just a matter of adding new weapons, but what can distinguish them apart? I mean, we all know that Mirage was going to be something else entirely (about mirrors and pistols) before it was ultimately scrapped.
I really hope ArenaNet does end up adding more in the foreseeable future (either via this new Saga or through another expansion).