So after some days trying the game (played at release and joined last Saturday again) I can say the game is really fun to play now. Soloing is fun, and enjoyable, even as a mages. The game feels fresher than before and you can tell there's an effort from the developers to make it less convoluted. I can't talk about party mechanics, but soloing you get nice leveling going on. I'm a slow leveler myself and I'm already 18, that took forever when I started on FFXI (not to mention you couldn't really solo that well).
My only tiny complain is the fact that you need leve allowances to recharge, 8 per day. But even then, there's lots of stuff to do, quests and storyline.
The game looks very good, albeit I can only talk partially to the pics I've seen - my computer is not too great so I keep the settings down. Characters and races are cute and serious at the same time, and I enjoy the lack of cartoon-ness.
Overall it looks like it's giving steps in the right directions and hopefully it'll manage to cater some of the popularity it lost and bad rep it got at release.
I can't talk about end-game, as I'm very low still, but people are extremely helpful (in most instances) and I lucked out being able to join reddot, the GAF ls. My advice is join a server you know people in, or if you have friends in, as it almost always improves the feeling of the game. If you're easy going maybe that won't matter much, since you'll make friends fast, but it's still worthy to play with friends you have played beforehand with.