I just want to start off saying I'm super excited for Dark Knight.
It's gonna be a tanking job that uses dark magic and greatswords. This is good cause the game is desperately hurting for tanks, and a lot of players have been asking for a greatsword class.

Greatswords AND dark magic??? What's not to like???
Well....
There is...just one... itty bitty problem...

Now, I've never played FFXI and from what I've heard I wouldn't like it very much. BUT If there's one thing I do like just from appearances.. is the extreme diversity. There's SO many classes, 22 in fact! Personally I would love to see this feat repeated or even bested here in XIV. Obviously this'll take time. So I'm thinking way ahead in the future with this post.

So here it is, the dilemma with Dark Knight...

They use Greatswords

I love Greatswords, I do. BUT... I think Dark Knight has a weapon very much suited to them and not so much any other job...