Disclaimer: note that there are some swear word in this post, please skip if you're easily offended: *And still no spoilers! Damn I'm proud :)
Well I'm now 8 hours in and story is making a bit more sense... After reading the datalog (ick) I now understand most of the terminology and concept, I'm also (as I expected) beginning to like the story.
It won't win any Oscars but I know what I was getting into when I buy a JRPG so I can enjoy it for what it is. Ignore some obvious plot-holes and find yourself immerse in an alien world that can only come from a guy who is on crack and is also Japanese (in other word: awesome sauce!)
Now the caste of characters...
Firstly: Sazh is a fucken legend! He is a one man artist of doom and destruction. Nevermind that he sucks in battle ATM, he is the MAN of WORD and WISDOM and easily the most likable character of the caste. I'd say he is carrying half the story just by himself atm and his the only character besides Lightning that I haven't felt the urge to kick in the ass yet.
Hope is still a whinning stuttering brat. The fact that his character is semi-believable as an 'ordinary' kid that got dragged into this doesn't make him any more endearing. I found myself wishing on more than one occasion that I had the mother rather than him. She was likable and a Milf to boot.
Lightning is a bitch, but since she's being a bitch to the rest of the caste I find I actually like her. (Even Sazh since he has some of the best comeback line and reactions ever when interacting with bitchy-Lightning)
Snow... is still a pedo... he just seem to have gotten dumber as the story goes on though, so now I'm calling he the dumbass pedo, and since he looks like a damn hobo, I'm now officially calling him that dumbass pedo-hobo. I am however, supremely jealous of his twin demon-chick sandwich action (heeelloooo SHIVA!) and wished on more than one occasion that I was a dumbass pedo-hobo (only less dumb).
Vanille... oh god Vanille, she's like the village idiot with a stick, I feel dumber each time I hear something come out of her mouth.
So summaries after 8 hours: Story gets better! Sazh is legend, I like bitchy-Lightning and Vanille should have been abortioned.