I enjoyed playing 1.0 and am really looking forward to ARR, and one of the things that SE does really well in both FFXI and FFXIV is the combat animations. I loved playing Monk and Dragoon for this reason. However, I think FFXIV needs more diversity in the animations and in the gear choices (too many clones imho) - no matter how unique your character's face/hair are, two characters of the same race/job often look identical at first glance.
I would like to eventually see at least two different weapon choices per class in a fashion similar to FFXI, example:
Warrior - Great-Axe, OR Dual-Wield One-handed axes (don't think main-hand/off-hand with two different weapons) but a matched pair of axes that are bought/sold/equipped as a pair. This makes it easier to balance stats and materia issues, doesn't require a dual-wield trait, and only really changes the weapon animations, character appearance, and flow of TP.
Other options could be:
Paladin - Sword/Shield, OR Greatsword (obvious trade-off of defense/offense)
Archer - Bow, OR Crossbow/Musket
Dragoon - Spear, OR Staff/Rapiers
Monk - Fists, OR Batons/Kama
Black Mage - Wand/Staff, OR Dagger (thinking ornate sacrificial dagger, not a knife)
White Mage - Club/Staff, OR Hammer/Mace
I know this will be too much of a departure from the Armoury System for some people, and it would definitely would be a lot of work for the devs, with a lot of new weapons and animations, but it's what I personally would like to see.
More diversity among the existing classes and jobs, in addition to slowing adding more classes/jobs.
On that front I would like to see a support class (not just DD)in the form of a thief/ninja, to debuff the mob and expose/stun/interrupt mobs making them more vulnerable. In addition they can help redirect aggro/hate through trickery/misdirection.
Well, that's my two cents. To the Devs, keep up the good work.