Okay, now that its over, I think that I can now offer my full impressions, and what I'd like to see them add later on.
Loved
That there's a real story. I wouldn't put the story quite on par with some of the single player Final Fantasies out there, but as far as JRPG storylines go, FFXIV probably have the strongest story of any JRPG to come out of Japan in the past few years.
The setting and vista's. There is some real diversity in the landscape in this game. So far, I cannot think of two areas of the map that really feel the same. Every different areas in the same map felt wholly distinct and worth exploring.
The Duty Finder. It's no substitute for going out and actually building your own little social network, but especially early in the game, this solves issue with the huge waits to form a party that plagues so many other titles.
The job system. It's very quick and flexible, and if you utilize it well it allows you to create much more versatile interesting characters. It'll be especially useful when players start hitting level caps.
What Needs Improvement
Crafting Leveling Needs Streamlining. Fact of the matter is, that for crafting to be truly useful in this game, you need to level up as many crafting jobs as you can manage. Thats not a huge deal, since these jobs level a bit faster than combat classes. However each job has its own bottle neck and hurdles for leveling, that slows down your progress considerably. It's a simple enough fix though, a few additional Leves and quests, with the right reward items, would go a long way towards fixing these problems.
Ditto for gathering classes, though to a slightly lesser degree. Streamlining leveling here would also help with the issues with crafting.
Gil is in short supply. I know it doesn't seem that way, but the moment you don't have story quests to supply you with constant piles of Gil, your savings will evaporate like that. This is because effective game play requires a lot of gil. For travel, crafting, leveling additional jobs, etc etc. There are numerous ways of solving this though, so I won't suggest any specific fixes, here anyway.
Repairing equipment is expensive. I know, you can do it yourself and save money, but that requires leveling a lot of crafting jobs, and a lot of players won't have that option. The simplest solution would simply be to charge less to repair only slightly damaged items, instead of a flat fee regardless of the amount of damage is done to items. This would reward players for actually keeping on top of equipment maintenance.
Mount Assisted Combat needs to be both expanded, and simplified. I'm reasonably certain they'll eventually let you use any mount for over world combat, which is good. However, the commands for controlling a mount are so numerous that in order to make good use of them, you have to click to a different set of shortcuts, ignoring your own players controls. This would probably be a good area of the game to insert a macro tutorial, since any automation would go a long way towards solving this issue.
Things I hope they add
An auction house. There are a lot of untradeable items in this game, whether its because the item is unique, or because of the Spiritbound effect. I wouldn't mind either, if you could put these items up at an auction house to get rid of them. Thankfully I'm fairly certain they're already planning to do this.
More armor options. There were only a handful of sets for each class in the beta, and although you could usually customize the color, it still lead to a lot of characters that looked alike. I'd like to see them greatly expand the selection of armor, add regional design variants to the same set, and to offer an in-game store that allows you purchase either cosmetically unique armor, or blueprints for applying a certain design to existing armor set. As in, the ability to customize both Brass and Iron Cuiress's to look like Warrior of Light armor, so long as you had the blueprint and a suitably leveled craft job.
There are of course, many different ways you could handle this.
More Non-Combat Activities. It sounds like these are on the way, but the more side distractions they put in, the better. Card games, racing, buying furniture and ornaments to decorate your house, whatever. I'd love to see the developers get really creative about this. If anybody has any ideas for stuff they could add in this regard, I'd love to hear it.
More Abilities. This is more a problem with some classes than others, though thankfully it does sound like this is on the way too.
More maps, cities, etc. Again, it sounds like this is on the way, but I had to mention it. The world they have here is wonderful, and its decent in size, but it still feels like there's a lot of room to expand.
Overall
They've got a really solid start here, and many of the features I'd like to see are likely already on their way. It's already a darn good game, but I don't think it'd take all that much more work to make it a truly excellent title.