I'm looking forward to FF14 Online honestly...
FF11 may not have been a very good MMO, but it did a few things that I wish other MMOs would do. Mainly I am talking about the class system. Not so much the sub-class system, but the primary-class system. The fact that you could change your class whenever you wanted to was something that no other MMO except The Agency for the PS3 has even been talking about. If you look at WoW, so many players have multiple characters, because they want to try out different classes. The idea that you can simply go back to your room and change your class, without having to change your character, lose your money, your guild assosciations or your friends list is simply paramount to almost everything I have seen in an MMO.
I'm also hoping that FF14 will have a more indepth story than FF11. After playing EQ2, I feel that I simply can't touch an MMO if it doesn't have an engaging story. The quality of story in EQ2 is that I would compare to the landmark Final Fantasy titles. Every single quest in the game related in some way to the core or periphrial stories within the game, and when I stopped playing I had completed 1400 of them; all unique, no repeats. FF11 however failed in that regard, I quit the game when I had completed EVERY quest available in the entire game. And I was still level 47.
FF11 Online was Square's first MMO. They now have 4 successful MMOs under their belt... so I have high hopes for FF14 Online.