You would like(hope) to be different or new in FFXIV as opposed to other MMO's in general?
For me, I hope FFXIV is different in how it meshes it's player base with the world and each other. I usually find other MMO's to have steep divides amognst its player base, and a general disinterest in what happens to the game world.
World of Warcraft has a clear PvP, and PvE community. And the hate spewed at each other from those vantage points borderlines on pure insanity. And lack of immersion is clear when most of the people who play now couldn't tell you where half the group content is. (End-game or otherwise.)
Age of Conan looks amazing, and I greatly enjoy the art style. But the whole Free-for-all PvP creates grudges that never let go. and serves to segregate the community. Also, besides your guild Fort, nothing else was worth taking note of PvP wise (at least when I played.) And Again, besides the minimal end-game, nothing rallied the people of the game to take a step forward onto unfamiliar terrain.
Aion I had High hopes for. Excellent character design and animations, faction based PvP(Which is pretty much dead considering what it was in it's beginnings), but the PvE was lacking. (Note: I did not make it to endgame) Besides the voice acting of the NPC's greetings and salutations, nothing made me feel like I was doing anything worth doing. This is not to mention the all but expected Korean grind-game that hid behind that beautiful graphics. You could literally run a dungeon for 2+hours and receive nothing... not even trash loot. And general lack of quests made it even harder to find a ingame identity.
So this is what I hope FFXIV does that other MMO's seem to lack: A game world that matters to its players. have our actions affect the outcome of some events, or even have somehting similar to the weekly conquest tallies in FFXI. But have even more signifigant outcomes. Something that the players will want to band together for to overcome, and create a stronger community because of it.
I'm interested in what others here would like to see in FFXIV that they found lackluster or completley absent from other MMO's.